Self Diagnosis - Diagnostic Trouble Codes - DTC p0010 - DTC p1198 (n52)

BMW MSV80

MSV80 engine operating system applies to N54 engine. DTC P0010 - DTC P1198

BMW Fault Code (hex)

0x2A80

BMW Fault Code (dez)

10880

BMW Fault Code Description VS-Text

Intake VANOS, activation

Component

Camshaft Position Actuator

Subcomponent

Intake

Monitoring criteria

Monitoring of VANOS control. Engine speed > 500 RPM.

Fault debouncing

none

Terminal conditions

Terminal 15, engine on

Voltage conditions

Voltage in onboard electrical system > 10 V

Temperature conditions

none

Time conditions

0.5 sec.

System test

none

Signal information

none

Calculated value Y/N

Possible Fault Causes

Open circuit

Repair procedures (plant/service)

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL illumination/CC message/emergency program

MIL ON

Remarks

none

0x2A82

10882

VANOS intake

Camshaft Position Timing

Intake

none

0x2A85

10885

Exhaust VANOS, activation

Camshaft Position Actuator

Exhaust

Monitoring of VANOS control. Engine speed > 500 RPM

none

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

0.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL ON

none

0x2A87

10887

Exhaust VANOS, mechanism

Camshaft Position Timing

Exhaust

none

0x2AA4

10916

Camshaft sensor, inlet, tooth fault

Crankshaft/Camshaft Position Sensor

Intake

NWE synchronous, adaptation enabled

On each camshaft tooth flank when the position is out of tolerance. Immediate entry without debounce.

Terminal 15 on

none

Position of NWA outside tolerance range relative to crankshaft, with massive sudden change relative to last reference adaptation.

Check position (valve timing setting) of camshaft and reluctor
Check torque on crankshaft center bolt

MIL 2nd DC, CAM operates in emergency default mode

Installation fault or mechanical malfunction in camshaft drive

0x2AA5

10917

Camshaft sensor, exhaust, tooth fault

Crankshaft/Camshaft Position Sensor

Exhaust

NWA synchronized, adaptation enabled

On each camshaft tooth flank when the position is out of tolerance. Immediate entry without debounce.

Terminal 15 on

none

Position of NWA outside tolerance range relative to crankshaft, with massive sudden change relative to last reference adaptation.

Check position (valve timing setting) of camshaft and reluctor
Check torque on crankshaft center bolt

MIL 2nd DC, CAM operates in emergency default mode

Installation fault or mechanical malfunction in camshaft drive

0x2C9C

11420

Oxygen sensor heating before catalytic converter, activation

Oxygen Sensor, Front

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds.

Terminal 15, engine on

none

0.2 sec.

none

Heater wire open

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream O2 sensor forward of catalyst for Bank 1
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9C

11420

Oxygen sensor heating before catalytic converter, activation

Oxygen Sensor, Front

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater has short to ground

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream O2 sensor forward of catalyst for Bank 1
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9C

11420

Oxygen sensor heating before catalytic converter, activation

Oxygen Sensor, Front

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater short circuit to positive

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream O2 sensor forward of catalyst for Bank 1
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9E

11422

Oxygen sensor heating behind catalytic converter, activation

Oxygen Sensor, Rear

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater wire open

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Downstream O2 sensor behind catalyst for Bank 1
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9E

11422

Oxygen sensor heating behind catalytic converter, activation

Oxygen Sensor, Rear

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater has short to ground

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Downstream O2 sensor behind catalyst for Bank 1
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9E

11422

Oxygen sensor heating behind catalytic converter, activation

Oxygen Sensor, Rear

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater short circuit to positive

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Downstream O2 sensor behind catalyst for Bank 1
Replace O2 sensor
Replace DME

MIL ON

none

0x2C24

11300

Oxygen sensors before catalytic converter mixed up

Oxygen Sensor, Front

Sensors Swapped

Monitoring of interchanged O2 sensors. Implausible O2 sensor signal at idle and during highway operation. Engine speed exceeds 288 RPM. No overrun cutoff. No fault memories.

Lambda control for both banks at control limit

Terminal 15, engine on

none

Engine at operating temperature

approximately 50 sec.

O2 sensors reversed

none

Oxygen sensor before catalytic converter for Banks 1 and 2 connections reversed.

Replace pre-cat O2 sensors.

none

0x2C6A

11370

Oxygen sensors behind catalytic converter, mixed up

Oxygen Sensor, Rear

Sensors Swapped

O2 sensor system check O2 sensor voltage too low = Signal sticks at lean on one bank and O2 sensor voltage too high = Signal sticks on rich on the other bank The trim controller diagnosis must have been executed, see trim controller diagnosis. Detection of faults during the trim control diagnosis triggers the active test. Engine running at idle is adequate for the active test

Downstream (post-cat) O2 sensor voltage < 0.2 V with rich lambda specification in active test for one bank, and downstream (post-cat) O2 sensor voltage > 0.7 V with lean lambda specification in active test on the other bank

Terminal 15, engine on

none

Engine at operating temperature

roughly 300s following completion of trim control diagnosis

O2 sensors reversed

none

Downstream (post-cat) O2 sensors connected to wrong banks

Replace downstream (post-cat) O2 sensors

none

0x2C9D

11421

Oxygen sensor heating before catalytic converter 2, activation

Oxygen Sensor, Front

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater wire open

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream O2 sensor forward of catalyst for Bank 2
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9D

11421

Oxygen sensor heating before catalytic converter 2, activation

Oxygen Sensor, Front

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10V. Sensors installed. No fault memories

Active immediately after terminal 15 change; electr. faults entered within a few seconds.

Terminal 15, engine on

none

0.2 sec.

none

Heater has short to ground

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream O2 sensor forward of catalyst for Bank 2
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9D

11421

Oxygen sensor heating before catalytic converter 2, activation.

Oxygen Sensor, Front

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V. Sensors installed. No fault memories

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater short circuit to positive

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream O2 sensor forward of catalyst for Bank 2
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9F

11423

Oxygen sensor heating behind catalytic converter 2, activation

Oxygen Sensor, Rear

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater wire open

Visual inspection of wiring, DME plug and O2 sensor for damage
Inspect wiring
Check plug-in connections DME <=> Wiring harness <=> downstream (post-cat) O2 sensor for Bank 2 precatalyst
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9F

11423

Oxygen sensor heating behind catalytic converter 2, activation

Oxygen Sensor, Rear

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V Sensors installed. No fault memories

Active immediately after terminal 15 change; electr. faults entered within a few seconds.

Terminal 15, engine on

none

0.2 sec.

none

Heater has short to ground

Visual inspection of wiring, DME plug and O2 sensor for damage
Inspect wiring
Check plug-in connections DME <=> Wiring harness <=> downstream (post-cat) O2 sensor for Bank 2 precatalyst
Replace O2 sensor
Replace DME

MIL ON

none

0x2C9F

11423

Oxygen sensor heating behind catalytic converter 2, activation

Oxygen Sensor, Rear

Heater Electrical

Driver circuit diagnosis for O2 sensor heater. UBatt > 10 V Sensors installed. No fault memories.

Active immediately after terminal 15 change; electr. faults entered within a few seconds

Terminal 15, engine on

none

0.2 sec.

none

Heater short circuit to positive

Visual inspection of wiring, DME plug and O2 sensor for damage
Inspect wiring
Check plug-in connections DME <=> Wiring harness <=> downstream (post-cat) O2 sensor for Bank 2 precatalyst
Replace O2 sensor
Replace DME

MIL ON

none

0x2F9A

12186

Ambient temperature sensor, communication

Ambient Air Temperature Sensor

Electrical

Ambient temperature sensor signal communications monitor

22 sec.

Terminal 15 ON

none

Invalid data reading received from instrument cluster: Fault in wiring to sensor, sensor disconnected or defective

Visual inspection of sensor
Electrical check on sensor wire and power wires
Sensor replacement

MIL ON in US versions only

none

0x2F99

12185

Ambient temperature sensor, plausibility

Ambient Air Temperature Sensor

Plausibility

PLAUS

Plausibility monitoring of ambient temperature sensor with end of start phase recognized

no invariable debounce time, constant sensor data reading during engine warm-up produces entry

Terminal 15 ON

none

Outside temperature > 35°C or outside temperature < -7°C, Coolant temperature > -10°C

none

Constant, invariable sensor signal: Sticking sensor, sensor manipulation

Visual inspection of sensor
Electrical check on sensor wire and power supply wire
Check sensor data response to motion
Replace sensor

MIL ON in US versions only

0x2F9A

12186

Ambient temperature sensor, communication

Ambient Air Temperature Sensor

Electrical

Ambient temperature sensor signal communications monitor

22 sec.

Terminal 15 ON

none

Instrument cluster receives fault report and symptom: Fault in wiring to sensor, sensor disconnected or defective.

Visual inspection of sensor
Electrical check on sensor wire and power wires.
Sensor replacement

MIL ON in US versions only

none

0x2F9A

12186

Ambient temperature sensor, communication

Ambient Air Temperature Sensor

Electrical

Ambient temperature sensor signal communications monitor.

22 sec.

Terminal 15 ON

none

Instrument cluster receives fault report and symptom: Fault in wiring to sensor, sensor disconnected or defective.

Visual inspection of sensor
Electrical check on sensor wire and power wires
Sensor replacement

MIL ON in US versions only

none

0x2EEC

12012

Temperature sensor cooler outlet, plausibility

Radiator Coolant Temperature Sensor

Plausibility

Engine must be running

no invariable debounce time, constant sensor data reading during engine warm-up produces entry

Terminal 15 ON

11 V < electrical system voltage < 26 V

10°C < Coolant temperature at engine start < 65°C, -10°C < Induction air temperature at engine start < 69°C

600 ms

none

Temperature sensor seizing, sensor manipulation

Visual inspection of sensor
Perform electrical check on sensor and power-supply wires
Test to determine whether the temperature really changes when the thermostat opens
Replace sensor

MIL ON in US versions only

temperature condition defined by data entry

0x2EEA

12010

Temperature sensor cooler outlet, signal

Radiator Coolant Temperature Sensor

Electrical

Radiator discharge temperature signal monitor

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 9.15 V

none

5 sec.

none

Short to ground in sensor wire

Perform electrical check on sensor wire and power-supply wires.
Visual inspection of plug-in contacts (on component and DME ends).
Replace sensor.

MIL ON in US versions only

Voltage range diagnosis

0x2EEA

12010

Temperature sensor cooler outlet, signal

Radiator Coolant Temperature Sensor

Electrical

Radiator discharge temperature signal monitor

No compliance with temperature condition and time after end of start > 120 sec.

Terminal 15 ON

Voltage in onboard electrical system > 9.15 V

Intake air temperature >= -5.25°C or if less than -5.25°C, then time after end of start phase > 120 sec.

No compliance with temperature condition and time after end of start >120 sec.

none

Sensor wire shorted to positive or open circuit in wire

Perform electrical check on sensor wire and power-supply wires
Visual inspection of plug-in contacts (on component and DME ends)
Replace sensor

MIL ON in US versions only

Voltage range diagnosis

0x2D16

11542

Air-mass sensor, signal

Mass Air Flow Sensor

Electrical

Engine start completed

0.2 sec.

Terminal 15

OBD1 conditions met (voltage between 10 V and 16 V)

none

Sensor wire fallen off

Visual inspection of plug-in terminals (at components and DME)
Perform electrical check on sensor wire, power supply and ground
Replace sensor

none

Line break

0x2F09

12041

Intake air temperature sensor, plausibility

Intake Air Temperature Sensor

Plausibility

Engine must be running, compliance with specified diagnosis conditions is mandatory (see Time conditions).

30 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

When the engine is started the ambient temperature must exceed -7.5°C and be lower than 35.3°C, engine temperature above 84.75°C

(Drive at 40 km/h for 120 sec., then allow to stand at idle for up to 60 sec.) x2 (run though routine twice) + debounce time 30 sec.

none

Constant, invariable sensor signal: Sticking sensor, sensor manipulation

Check sensor data
Carry out electrical check on sensor wire and power supply wires
Visual inspection of sensor
Replace sensor

MIL ON in US versions only

none

0x2F08

12040

Intake-air temperature sensor, signal

Intake Air Temperature Sensor

1 Electrical

Engine must be running

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

Ambient temperature at engine start must be above -7°C, and should not drop below -7°C during subsequent driving

5 sec.

none

Short to ground in sensor wire

Perform electrical check on sensor wire and power-supply wires
Visual inspection of plug-in contacts (on component and DME ends)
Replace sensor

MIL ON in US versions only

Voltage range diagnosis

0x2F08

12040

Intake-air temperature sensor, signal

Intake Air Temperature Sensor

1 Electrical

Time after end of start phase > 120 sec. > 24 sec. (provisional data content definition), engine must be running

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

Ambient temperature at engine start must be above -7°C, and should not drop below -7°C during subsequent driving

5 sec.

none

Sensor wire shorted to positive or open circuit in wire

Perform electrical check on sensor wire and power-supply wires
Visual inspection of plug-in contacts (on component and DME ends)
Replace sensor

MIL ON in US versions only

Voltage range diagnosis Important: If the ground wire is open LV_ERR_MAF is before LV_ERR_TIA in the control module's fault memory.

0x2EE0

12000

Coolant temperature sensor, signal

Engine Coolant Temperature Sensor

1 Electrical

Coolant temperature signal monitor

1.5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 9.15 V

none

Short to ground in sensor wire

Perform electrical check on sensor wire and power-supply wires
Visual inspection of plug-in contacts (on component and DME ends)
Replace sensor

MIL ON, electrical water pump and E fan at full power with engine running

Voltage range diagnosis

0x2EE0

12000

Coolant temperature sensor, signal

Engine Coolant Temperature Sensor

1 Electrical

Coolant temperature signal monitor

1.5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 9.15 V

Intake air temperature >= -5.25°C

If compliance with temperature condition is not present, then time after start phase completion > 120 sec.

none

Sensor wire shorted to positive or open circuit in wire

Perform electrical check on sensor wire and power-supply wires
Visual inspection of plug-in contacts (on component and DME ends)
Replace sensor

MIL ON, electrical water pump and E fan at full power with engine running

Voltage range diagnosis

0x2CF6

11510

Throttle-valve potentiometer 1, plausibility to air mass

Throttle Position Sensor

Plausibility check on throttle valve aperture angle as measured against modeled data

0.25 sec.

Terminal 15 on, engine on

Voltage in onboard electrical system >= 10 V

none

Aperture angle in percent

Contact resistance in input wires or plug-in contacts at throttle valve, electrical problem with throttle valve

Check: The sum of throttle valve voltages must equal 5 V
Perform electrical check on wiring from DME to throttle valve
Visual inspection of plug-in contacts (at component, wiring harness and DME)
Replace component

CC status report: WAL_1, reduced engine output!, MIL ON possible EMB + RPM limit at 1300 RPM

none

0x2CF9

11513

Throttle-valve potentiometer

Throttle Position Sensor

none

0x2CF9

11513

Throttle-valve potentiometer

Throttle Position Sensor

none

0x2EF4

12020

Map thermostat, mechanism

Thermostat

Functional Check

Outside temperature > -10°C Start temperature (coolant temperature) < 65°C and > -10°C Speed > 30 and <130 km/h

Once release point is reached 25 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

10°C < Coolant temperature at engine start < 65°C, -10°C < Induction air temperature at engine start < 69°C

approximately 10 minutes

none

The thermostat seizes in open position (sticking in open position corresponds to a gap of roughly 1 mm!); Engine fails to warm to normal operating temperature.

Check heating of engine
Check thermostat and replace as indicated

MIL on in 2nd driving cycle

US only

0x2C3F

11327

DME, internal fault: oxygen sensor, evaluation module

Oxygen Sensor, Front

Electrical

Monitoring of O2 sensor chip No fault memories

Short to ground in self-diagnosis processor chip

Terminal 15, engine on

none

approximately 5 sec.

none

Short to ground

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 2
Check wiring harness for shorts to positive or ground and shorts/shunt to other bank (melted?) => Replace wiring harness
Replace O2 sensor
Replace DME

MIL ON

none

0x2C3F

11327

DME, internal fault: oxygen sensor, evaluation module

Oxygen Sensor, Front

Electrical

Monitoring of O2 sensor chip No fault memories

Self-diagnosis processor chip has short to positive

Terminal 15, engine on

none

approximately 5 sec.

none

Short to positive

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 2
Check wiring harness for shorts to positive or ground and shorts/shunt to other bank (melted?) => Replace wiring harness
Replace O2 sensor
Replace DME

MIL ON

none

0x2C39

11321

Oxygen sensor before catalytic converter, dynamics

Oxygen Sensor, Front

Slow Response

O2 sensor dynamic test. No fault memories. Drive at 50 - 80 km/h and at moderate engine speed.

Reduced dynamic response from sensor

Terminal 15, engine on

none

Engine at operating temperature

approximately 400 sec.

none

Aging in O2 sensor. Poisoned O2 sensor. In isolated instances an open wire can produce these symptoms.

Replace the suspect O2 sensor. If this fails to resolve the issue, inspect the wiring.

MIL ON

none

0x2CA6

11430

Oxygen sensor heating before catalytic converter, function

Oxygen Sensor, Front

Heater

Check O2 sensor heater; sensor too cold

O2 sensor temperature < 680°C for more than 5 sec.

Terminal 15, engine on

none

Roughly 40 sec. after engine start; after approximately 15 sec. in standard operation

none

Age effects on sensor heater. Higher contact resistance. Open circuit at Pin VN.

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires (including resistance)
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor on Bank 1 (water or corrosion in the plug? => Repeatedly disconnect the plug and then FIRMLY press it back in)
Replace O2 sensor
Replace DME

MIL ON

none

0x2CA6

11430

Oxygen sensor heating before catalytic converter, function

Oxygen Sensor, Front

Heater

Data content defined

none

0x2C75

11381

Oxygen sensor behind catalytic converter, signal

Oxygen Sensor, Rear

Electrical

O2 sensor signal check. No fault memories. Mass airflow exceeds 10 kg/h.

Bank 1 downstream (post-cat) O2 sensor voltage less than 0.02 V; internal resistance in circuit for downstream oxygen sensor less than 10 ohms

Terminal 15, engine on

none

Engine at operating temperature

approximately 2 minutes

none

Voltage < 0.2 V

Short to ground

Check wiring
Check plugs
Resistance measurement
Measure voltage
Replace Bank 1 downstream (post-cat) O2 sensor

MIL ON

none

0x2C73

11379

Oxygen sensor behind catalytic converter, signal

Oxygen Sensor, Rear

Electrical

O2 sensor signal test. No fault memories

Voltage on Bank 1 O2 sensor behind catalytic converter greater than 4.6 V

Terminal 15, engine on

none

approximately 15 sec.

none

Voltage > 4.6 V

Short to positive

Check wiring
Measure downstream (post-cat) O2 sensor voltage
Check plug
Replace Bank 1 downstream (post-cat) O2 sensor

MIL ON

none

0x2C7B

11387

Oxygen sensor behind catalytic converter, signal

Oxygen Sensor, Rear

Slow Response

O2 sensor behind catalytic converter voltage too high with overrun injection deactivation active; signal sticks at rich

Voltage > 0.2 V

Terminal 15, engine on

none

Engine at operating temperature

Approximately 10s overrun injection deactivation

none

Open wire; short to positive, O2 sensor sticking (with aid of a power source) at U > 0.2 V; sensor too cold in overrun fuel supply deactivation

Check wiring
Check plugs
Measure wire resistance against positive and ground
Replace Bank 1 downstream (post-cat) O2 sensor

none

0x2C77

11383

Oxygen sensor behind catalytic converter, signal

Oxygen Sensor, Rear

Electrical

O2 sensor signal test. No fault memories

O2 sensor voltage between 0.4 V and 0.5 V; internal resistance in downstream oxygen sensor's circuit exceeds 60 k Ohms

Terminal 15, engine on

none

Engine at operating temperature

approximately 2 minutes

none

Voltage 0.4... 0.5 V

Open circuit

Visual inspection of wiring and plugs
Measure resistance
Replace affected wire
Replace wiring harness
Replace O2 sensor

MIL ON

none

0x2CA8

11432

Oxygen sensor heating behind catalytic converter, function

Oxygen Sensor, Rear

Heater

Check internal resistance of O2 sensor to check sensor heater => If the heater is too weak, the O2 sensor's internal resistance rises too high (= sensor too cold). No fault memories.

Internal resistance R > 12000 Ohm (US) or 15000 Ohm (ECE)

Terminal 15, engine on

none

Exhaust-gas temperature less than 700°C

approximately 400 sec.

none

O2 sensor is too cool; contact resistance at terminals in heater wire too high; heater too weak owing to aging

Was the temperature drop caused by external factors (driving into snow pile, ice on O2 sensor)? Thaw sensor, clear all fault memory, continue driving!

Check O2 sensor heater: Contact resistance on plugs and in wiring is excessive (DME-wiring harness-sensor)
Check wiring
Check O2 sensor plug (water or corrosion in the plug? Repeatedly disconnect the plug and then re-insert it FIRMLY)
Replace plug and/or wire as indicated
Replace the affected downstream (post-cat) O2 sensor

MIL ON

none

0x2C40

11328

DME, internal fault: oxygen sensor 2, evaluation module

Oxygen Sensor, Front

Electrical

Monitoring of O2 sensor chip. No fault memories.

Short to ground in self-diagnosis processor chip

Terminal 15, engine on

none

approximately 5 sec.

none

Short to ground

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 2
Check wiring harness for shorts to positive or ground and shorts/shunt to other bank (melted?) => Replace wiring harness
Replace O2 sensor
Replace DME

MIL ON

none

0x2C40

11328

DME, internal fault: oxygen sensor 2, evaluation module

Oxygen Sensor, Front

Electrical

Monitoring of O2 sensor chip. No fault memories.

Self-diagnosis processor chip has short to positive

Terminal 15, engine on

none

approximately 5 sec.

none

Short to positive

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 2
Check wiring harness for shorts to positive or ground and shorts/shunt to other bank (melted?) => Replace wiring harness
Replace O2 sensor
Replace DME

MIL ON

none

0x2C3A

11322

Oxygen sensor before catalytic converter 2, dynamics

Oxygen Sensor, Front

Slow Response

O2 sensor dynamic test. No fault memories. Drive at 50 - 80 km/h and at moderate engine speed.

Reduced dynamic response from sensor

Terminal 15, engine on

none

Engine at operating temperature

approximately 400 sec.

none

Aging in O2 sensor. Poisoned O2 sensor. In isolated instances an open wire can produce these symptoms.

Replace the suspect O2 sensor. If this fails to resolve the issue, inspect the wiring.

MIL ON

none

0x2CA7

11431

Oxygen sensor heating before catalytic converter 2, function

Oxygen Sensor, Front

Heater

Check O2 sensor heater; sensor too cold

O2 sensor temperature < 680°C for more than 5 sec.

Terminal 15, engine on

none

Roughly 40 sec. after engine start; after approximately 15 sec. in standard operation

none

Age effects on sensor heater. Higher contact resistance. Open circuit at Pin VN.

Visual inspection of wires, DME plug and O2 sensor for damage
Check wires (including resistance)
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 2 (water or corrosion in the plug? => Repeatedly disconnect the plug and then FIRMLY press it back in)
Replace O2 sensor
Replace DME

MIL ON

none

0x2CA7

11431

Oxygen sensor heating before catalytic converter 2, function

Oxygen Sensor, Front

Heater

Data content defined

none

0x2C76

11382

Oxygen sensor behind catalytic converter 2, signal

Oxygen Sensor, Rear

Electrical

O2 sensor signal check. No fault memories; Mass airflow exceeds 10 kg/h

Bank 2 downstream (post-cat) O2 sensor voltage less than 0.02 V; internal resistance in circuit for downstream oxygen sensor less than 10 ohms

Terminal 15, engine on

none

Engine at operating temperature

approximately 2 minutes

none

Voltage < 0.2 V

Short to ground

Check wiring
Check plugs
Resistance measurement
Measure voltage
Replace Bank 2 downstream (post-cat) O2 sensor

MIL ON

none

0x2C74

11380

Oxygen sensor behind catalytic converter 2, signal

Oxygen Sensor, Rear

Electrical

O2 sensor signal test. No fault memories

Voltage on Bank 2 O2 sensor behind catalytic converter greater than 4.6 V

Terminal 15, engine on

none

approximately 15 sec.

none

Voltage > 4.6 V

Short to positive

Check wiring
Measure downstream (post-cat) O2 sensor voltage
Check plug
Replace Bank 2 downstream (post-cat) O2 sensor.

MIL ON

none

0x2C7C

11388

Oxygen sensor behind catalytic converter 2, signal

Oxygen Sensor, Rear

Slow Response

O2 sensor behind catalytic converter voltage too high with overrun injection deactivation active; signal sticks at rich

Voltage > 0.2 V

Terminal 15, engine on

none

Engine at operating temperature

Approximately 10s overrun injection deactivation

none

Open wire; short to positive, O2 sensor sticking (with aid of a power source) at U > 0.2 V; sensor too cold in overrun fuel supply deactivation.

Check wiring
Check plugs
Measure wire resistance against positive and ground
Replace Bank 2 downstream (post-cat) O2 sensor

MIL ON

none

0x2C78

11384

Oxygen sensor behind catalytic converter 2, signal

Oxygen Sensor, Rear

Electrical

O2 sensor signal test. No fault memories

O2 sensor voltage between 0.4 V and 0.5 V; internal resistance in downstream oxygen sensor's circuit exceeds 60 k Ohms

Terminal 15, engine on

none

Engine at operating temperature

approximately 2 minutes

none

Voltage 0.4... 0.5 V

Open circuit

Visual inspection of wiring and plugs
Measure resistance
Replace affected wire
Replace wiring harness
Replace O2 sensor

MIL ON

none

0x2CA9

11433

Oxygen sensor heating behind catalytic converter 2, function

Oxygen Sensor, Rear

Heater

Check internal resistance of O2 sensor to check sensor heater => If the heater is too weak, the O2 sensor's internal resistance rises too high (= sensor too cold). No fault memories

Internal resistance R > 12000 Ohm (US) or 15000 Ohm (ECE)

Terminal 15, engine on

none

Exhaust-gas temperature less than 700°C

approximately 400 sec.

none

O2 sensor is too cool; contact resistance at terminals in heater wire too high; heater too weak owing to aging.

Was the temperature drop caused by external factors (driving into snow pile, ice on O2 sensor)? Thaw sensor, clear all fault memory, continue driving!

Check O2 sensor heater: Contact resistance on plugs and in wiring is excessive (DME-wiring harness-sensor)
Check wiring
Check O2 sensor plug (water or corrosion in the plug? Repeatedly disconnect the plug and then re-insert it FIRMLY)
Replace plug and/or wire as indicated
Replace the affected downstream (post-cat) O2 sensor

MIL ON

none

0x29E0

10720

Mixture control

Fuel System

All Load Ranges

Closed-loop lambda mixture control = Active

65 sec. lambda controller + adaptation deviation in max. 1200 sec.

Engine must be running

none

Tam > - 10°C

none

Mixture too lean A. Air path

Leaks in induction tract (also in lines to brake booster)
Resonators obstructed
Leaks or malfunctions in positive crankcase ventilation
Leaks in crankcase (oil filler cap)
HFM malfunction
EVAP valve leaking

Visual inspection of affected components - Find and repair leaks - Mutual exchange of HFM or injector valves - Inspect HFM plug-in contacts and electrical wires - Check fuel pressure

MIL on in 2nd driving cycle

none

0x29E0

10720

Mixture control

Fuel System

All Load Ranges

Closed-loop lambda mixture control = Active

75 sec. lambda controller + adaptation deviation in max. 1200 sec.

Engine must be running

none

Tam > -10°C

none

Mixture too rich A. Air path

Resonators obstructed/sealed
Malfunction in positive crankcase ventilation
HFM malfunction
Tank EVAP valve is leaking (tank ventilation gases) - Collateral fault from incorrect DISA positioning - Collateral fault

Visual inspection of affected components - Reverse Mutual installation positions of HFM or injector valves - Check HFM plug contacts and electrical wiring - Check fuel pressure - Catalyst on one bank melted (Visual inspection through O2 sensor fittings)

MIL on in 2nd driving cycle

none

0x29E1

10721

Mixture control 2

Fuel System

All Load Ranges

Closed-loop lambda mixture control = Active

65 sec. lambda controller + adaptation deviation in max. 1200 sec.

Engine must be running

none

Tam> -10°C

none

Mixture too lean A. Air path

Leaks in induction tract (also in lines to brake booster)
Resonators obstructed
Leaks or malfunctions in positive crankcase ventilation
Leaks in crankcase (oil filler cap)
HFM malfunction
EVAP valve leaking

Visual inspection of affected components - Find and repair leaks - Mutual exchange of HFM or injector valves - Inspect HFM plug-in contacts and electrical wires - Check fuel pressure

MIL on in 2nd driving cycle

none

0x29E1

10721

Mixture control 2

Fuel System

All Load Ranges

Closed-loop lambda mixture control = Active

75 sec. lambda controller + adaptation deviation in max. 1200 sec.

Engine must be running

none

Tam> -10°C

none

Mixture too rich A. Air path

Resonators obstructed/sealed
Malfunction in positive crankcase ventilation
HFM malfunction
Tank EVAP valve is leaking (tank ventilation gases) - Collateral fault from incorrect DISA positioning - Collateral fault

MIL on in 2nd driving cycle

none

0x2E30

11824

Fuel injector, cylinder 1, activation

Injector

Open Circuit

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E31

11825

Fuel injector, cylinder 2, activation

Injector

Open Circuit

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E32

11826

Fuel injector, cylinder 3, activation

Injector

Open Circuit

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E33

11827

Fuel injector, cylinder 4, activation

Injector

Open Circuit

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component

MIL

none

0x2E34

11828

Fuel injector, cylinder 5, activation

Injector

Open Circuit

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E35

11829

Fuel injector, cylinder 6, activation

Injector

Open Circuit

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2CF7

11511

Throttle-valve potentiometer 2, plausibility to air mass

Throttle Position Sensor

Plausibility check on throttle valve aperture angle as measured against modeled data

0.25 sec.

Terminal 15 on, engine on

Voltage in onboard electrical system >= 10 V

none

Aperture angle in percent

Contact resistance in input wires or plug-in contacts at throttle valve, electrical problem with throttle valve

Check: The sum of throttle valve voltages must equal 5 V
Perform electrical check on wiring from DME to throttle valve
Visual inspection of plug-in contacts (at component, wiring harness and DME)
Replace component

CC status report: WAL_1, reduced engine output!, MIL ON possible EMB + RPM limit at 1300 RPM

none

0x2CFA

11514

Throttle-valve potentiometer 2

Throttle Position Sensor

Throttle valve test

0.02 sec.

Terminal 15 ON

none

50 ms

none

Main relay response lag.
Short to ground in Channel 2 sensor wire or wire open.

Check fault memory for faults related to ""power supply to pedal travel sensor"" and/or ""main relay;"" replace main relay as indicated Perform electrical check on sensor wire and power supply Visual inspection of plug contacts (on component and DME ends)

none

Voltage range diagnosis

Note. This is the first fault entered in the control module's fault memory when the main relay is defective or a problem exists with the voltage supply to pedal-position sensor 1, as the debounce time is very short.

0x2CFA

11514

Throttle-valve potentiometer 2

Throttle Position Sensor

Throttle valve test

0.02 sec.

Terminal 15 ON

none

50 ms

none

Channel 2 sensor wire shorted to positive

Electrical check on sensor wire and electrical power supply
Visual inspection of plug-in contacts (at component and DME ends)

MIL control through lv_err_tps_obd

Voltage range diagnosis

0x2E30

11824

Fuel injector, cylinder 1, activation

Injector

Short to Ground

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E30

11824

Fuel injector, cylinder 1, activation

Injector

Short to Battery

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

Problem resolved only after terminal switch

0x2E31

11825

Fuel injector, cylinder 2, activation

Injector

Short to Ground

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E31

11825

Fuel injector, cylinder 2, activation

Injector

Short to Battery

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

Problem resolved only after terminal switch

0x2E32

11826

Fuel injector, cylinder 3, activation

Injector

Short to Ground

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E32

11826

Fuel injector, cylinder 3, activation

Injector

Short to Battery

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK, proceed to check component

MIL

Problem resolved only after terminal switch

0x2E33

11827

Fuel injector, cylinder 4, activation

Injector

Short to Ground

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E33

11827

Fuel injector, cylinder 4, activation

Injector

Short to Batt

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK, proceed to check component

MIL

Problem resolved only after terminal switch

0x2E34

11828

Fuel injector, cylinder 5, activation

Injector

Short to Ground

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E34

11828

Fuel injector, cylinder 5, activation

Injector

Short to Batt

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

Problem resolved only after terminal switch

0x2E35

11829

Fuel injector, cylinder 6, activation

Injector

Short to Ground

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

MIL

none

0x2E35

11829

Fuel injector, cylinder 6, activation

Injector

Short to Batt

Injector control monitor

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

1.5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK, proceed to check component

MIL

Problem resolved only after terminal switch

0x29CC

10700

Combustion misfires, several cylinders

Misfire

Multiple

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa. Combustion miss on at least two cylinders.

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Ignition miss or fuel trim fault affecting at least two individual cylinders

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

Supplementary information always provided when combustion miss is detected on more than two cylinders.

0x29CC

10700

Combustion misfires, several cylinders

Misfire

Multiple

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa. Combustion miss on at least two cylinders

Combustion miss within first 1000 crankshaft rotations after start

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8 °C

6 crankshaft rotations after start

none

Ignition miss or fuel trim fault affecting at least two individual cylinders

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

Supplementary information always provided when combustion miss is detected on more than two cylinders.

0x29CC

10700

Combustion misfires, several cylinders

Misfire

Multiple

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa. Combustion miss on at least two cylinders.

at least 2 bits from Symbol are set to 2

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Ignition miss or fuel trim fault affecting at least two individual cylinders.

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

Supplementary information always provided when combustion miss is detected on more than two cylinders.

0x29CC

10700

Combustion misfires, several cylinders

Misfire

Multiple

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa Combustion miss on at least two cylinders

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Ignition miss or fuel trim fault affecting at least two individual cylinders

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

Supplementary information always provided when combustion miss is detected on more than two cylinders.

0x29CD

10701

Combustion misfires, cylinder 1

Misfire

Cyl 1

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CD

10701

Combustion misfires, cylinder 1

Misfire

Cyl 1

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa.

Combustion miss within first 1000 crankshaft rotations after start.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

None

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CD

10701

Combustion misfires, cylinder 1

Misfire

Cyl 1

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CE

10702

Combustion misfires, cylinder 2

Misfire

Cyl 2

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CE

10702

Combustion misfires, cylinder 2

Misfire

Cyl 2

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within first 1000 crankshaft rotations after start

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > -6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CE

10702

Combustion misfires, cylinder 2

Misfire

Cyl 2

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CF

10703

Combustion misfires, cylinder 3

Misfire

Cyl 3

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CF

10703

Combustion misfires, cylinder 3

Misfire

Cyl 3

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa.

Combustion miss within first 1000 crankshaft rotations after start.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29CF

10703

Combustion misfires, cylinder 3

Misfire

Cyl 3

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D0

10704

Combustion misfires, cylinder 4

Misfire

Cyl 4

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D0

10704

Combustion misfires, cylinder 4

Misfire

Cyl 4

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within first 1000 crankshaft rotations after start

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D0

10704

Combustion misfires, cylinder 4

Misfire

Cyl 4

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D1

10705

Combustion misfires, cylinder 5

Misfire

Cyl 5

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D1

10705

Combustion misfires, cylinder 5

Misfire

Cyl 5

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within first 1000 crankshaft rotations after start

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D1

10705

Combustion misfires, cylinder 5

Misfire

Cyl 5

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > -6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D2

10706

Combustion misfires, cylinder 6

Misfire

Cyl 6

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within 200 crankshaft rotations, weighted according to engine speed and load factor

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > -6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D2

10706

Combustion misfires, cylinder 6

Misfire

Cyl 6

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss within first 1000 crankshaft rotations after start

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D2

10706

Combustion misfires, cylinder 6

Misfire

Cyl 6

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Combustion miss or problem with fuel trim

Ignition coils, spark plugs, ignition cables, injectors, DME

MIL ON

none

0x29D9

10713

Misfire at low tank fill level

Misfire

Low Fuel

Combustion consistency measurement. Starting at engine speed n > 450 and n < 7000. Ambient pressure > 740 hPa

Combustion miss detected within four diagnosis windows consisting of 1000 crankshaft rotations

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

Coolant temperature > - 6.8°C

6 crankshaft rotations after start

none

Not enough fuel in tank

Refuel, ignition coils, spark plugs, ignition cables, injectors, DME

according to the corresponding combustion miss fault

Supplementary information always provided when combustion miss of any kind is detected during operation in the fuel reserve range.

0x2E68

11880

Knock-sensor signal 1

Knock Sensor

Sensor 1

Knock sensor signal monitor. Vehicle road operation at > 2800 RPM (current data status, tends toward > 2560 RPM) and air mass > 180 mg/unit. It is not possible to clear fault by switching ignition terminals. Compliance with the activation conditions and absence of malfunction extending over several seconds are required before fault code can be cleared.

The debounce time is derived from assessment of statistical diagnosis

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

min 1 sec., max 3 sec.

none

Knock sensor signal too low. Threaded sensor connection is loose or wire connecting knock sensor 2 to engine-management ECU is open.

Check knock sensor connection to verify that it is tight.
Check wire connecting knock sensor 1 and engine-management control module
Check for connection between knock sensor 1 and ground or positive
Replace knock sensor

No warning message. (No closed-loop knock control available. Power loss, as engine reverts to operation in safe range.)

none

0x2E68

11880

Knock-sensor signal 1

Knock Sensor

Sensor 1

Knock sensor signal monitor. Vehicle road operation at > 2800 1 RPM (current data status, tends toward > 2560 RPM) and air mass > 180 mg/unit. It is not possible to clear fault by switching ignition terminals. Compliance with the activation conditions and absence of malfunction extending over several seconds are required before fault code can be cleared.

Yes, by event counter. Knock signal sensor must lie below threshold (differential knock signal < 180 mV < 200 mV) for 1...3 sec., then fault code is registered

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

min 1 sec., max 3 sec.

none

Knock sensor signal too low. Threaded sensor connection is loose or wire connecting knock sensor 1 to engine-management ECU is open.

Check knock sensor connection to verify that it is tight.
Check wire connecting knock sensor 1 and engine-management control module
Check for connection between knock sensor 1 and ground or positive
Replace knock sensor

No warning message. (No closed-loop knock control available. Power loss, as engine reverts to operation in safe range.)

none

0x2E68

11880

Knock-sensor signal 1

Knock Sensor

Sensor 1

Yes, by event counter. If knock sensor signal remains below threshold (differential knock signal > 4.8 V) for 1...3 sec. fault code is stored.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

min 1 sec., max 3 sec.

none

Knock sensor signal too high. Threaded sensor connection is loose or wire connecting knock sensor 1 to the engine-management ECU is shorted to positive.

Check knock sensor connection to verify that it is tight.
Check wire connecting knock sensor 1 and engine-management control module
Check for connection between knock sensor 1 and ground or positive
Replace knock sensor

No warning message. (No closed-loop knock control available. Power loss, as engine reverts to operation in safe range.)

none

0x2A94

10900

Crankshaft sensor, signal

Crankshaft Position Sensor

Electrical

Engine turns over, KW signals are not detected.

Application number of camshaft flanks detected and no crankshaft tooth has been recognized

Terminal 15 on

none

Crankshaft sensor signal missing, prior to engine start

Check signal wire for short to positive, ground, opens and interference signals
Replace crankshaft sensor

MIL 2nd DC CRK in emergency default mode

none

0x2A94

10900

Crankshaft sensor, signal

Crankshaft Position Sensor

Electrical

Engine turns over, crankshaft signals detected.

Application number of camshaft flanks detected and no crankshaft tooth has been recognized

Terminal 15 on

none

KWG signal missing after engine start

Check signal wire for short to positive, ground, opens and interference signals
Replace crankshaft sensor

MIL 2nd DC CRK emergency default mode

none

0x2AA0

10912

Camshaft sensor, inlet, signal

Camshaft Position Sensor

Intake Electrical

NWE synchronous

On every engine cycle when no camshaft flank has been detected.

Terminal 15 on

none

Intake camshaft sensor signal missing or implausible

Check signal wire for short to positive, ground, opens and interference pulses.
Replace camshaft exhaust side sensor.

MIL 2nd DC, CAM operates in emergency default mode

Sensor failure after synchronization or during start if NW is not the NW used for synchronization.

0x2A9A

10906

Camshaft sensor, inlet, signal

Camshaft Position Sensor

Intake Electrical

Engine turning over

On every camshaft flank when the flank was outside tolerance. At engine start only.

Terminal 15 on

none

No valid camshaft flank recognized for synchronization. VANOS not locked down at start.

Check signal wire for short to positive, ground, open wire.
Replace camshaft sensor.
Check positions (valve timing setting) of camshaft reluctors
Check timing chain and chain tensioner assembly.
Check VANOS solenoids for dirt and contamination

MIL 2nd DC, CAM emergency default mode, Synchronization via exhaust camshaft.

No synchronization with NWE possible

0x2A9E

10910

Camshaft sensor, inlet, synchronization

Camshaft Position Sensor

Intake Electrical

NWE synchronous

On every camshaft flank if the flank ratio was not in tolerance.

Terminal 15 on

none

Intake camshaft autonomous synchronization, incorrect tooth flank ratio.

Replace camshaft reluctor, installation fault
Signal interference
Replace intake camshaft sensor, transmitting inverted signal

MIL 2nd DC, CAM operates in emergency default mode

Flank pattern does not match stored pattern.

0x2E24

11812

Ignition coil, cylinder 1

Ignition Coil

A Primary/Secondary Circuit

No dual ignition, secondary spark absent

Segment synchronization

Terminal 15 ON

Voltage in onboard electrical system > 11 V

none

t > 1 sec.

none

Voltage supply and ground connection for ignition system, ignition coil

Check voltage supply, KBB/ZSP plug contact, measure KBB insulation resistance, replace ignition coil.

none

0x2E25

11813

Ignition coil, cylinder 2

Ignition Coil

B Primary/Secondary Circuit

No dual ignition, secondary spark absent

Segment synchronization

Terminal 15 ON

Voltage in onboard electrical system > 11 V

none

t > 1 sec.

none

Voltage supply and ground connection for ignition system, ignition coil

Check voltage supply, KBB/ZSP plug contact, measure KBB insulation resistance, replace ignition coil.

none

0x2E26

11814

Ignition coil, cylinder 3

Ignition Coil

C Primary/Secondary Circuit

No dual ignition, secondary spark absent

Segment synchronization

Terminal 15 ON

Voltage in onboard electrical system > 11 V

none

t > 1 sec.

none

Voltage supply and ground connection for ignition system, ignition coil

Check voltage supply, KBB/ZSP plug contact, measure KBB insulation resistance, replace ignition coil.

none

0x2E27

11815

Ignition coil, cylinder 4

Ignition Coil

D Primary/Secondary Circuit

No dual ignition, secondary spark absent

Segment synchronization

Terminal 15 ON

Voltage in onboard electrical system > 11 V

none

t > 1 sec.

none

Voltage supply and ground connection for ignition system, ignition coil

Check voltage supply, KBB/ZSP plug contact, measure KBB insulation resistance, replace ignition coil.

none

0x2E28

11816

Ignition coil, cylinder 5

Ignition Coil

E Primary/Secondary Circuit

No dual ignition, secondary spark absent

Segment synchronization

Terminal 15 ON

Voltage in onboard electrical system > 11 V

none

t > 1 sec.

none

Voltage supply and ground connection for ignition system, ignition coil.

Check voltage supply, KBB/ZSP plug contact, measure KBB insulation resistance, replace ignition coil.

none

0x2E29

11817

Ignition coil, cylinder 6

Ignition Coil

F Primary/Secondary Circuit

No dual ignition, secondary spark absent

Segment synchronization

Terminal 15 ON

Voltage in onboard electrical system > 11 V

none

t >1 sec.

none

Voltage supply and ground connection for ignition system, ignition coil

Check voltage supply, KBB/ZSP plug contact, measure KBB insulation resistance, replace ignition coil.

none

0x2AA1

10913

Camshaft sensor, exhaust, signal

Camshaft Position Sensor

Exhaust Electrical

NWA synchronous

On every engine cycle when no camshaft flank has been detected.

Terminal 15 on

none

Exhaust camshaft signal implausible or missing

Check signal wire for short to positive, ground, opens and interference pulses
Replace camshaft exhaust side sensor

MIL 2nd DC, CAM operates in emergency default mode

Sensor failure after synchronization or during start if NW is not the NW used for synchronization.

0x2A9B

10907

Camshaft sensor, exhaust, signal

Camshaft Position Sensor

Exhaust Electrical

Engine turns over, synchronization with NWE fails

On every camshaft flank when the flank was outside tolerance. At engine start only.

Terminal 15 on

none

No valid camshaft flank recognized for synchronization. VANOS not locked down at start.

Check signal wire for short to positive, ground, open wire.
Replace camshaft sensor.
Check positions (valve timing setting) of camshaft reluctors
Check timing chain and chain tensioner assembly.
Check VANOS solenoids for dirt and contamination

Nothing, as double fault is present

No synchronization possible with any camshaft

0x2A9F

10911

Camshaft sensor, exhaust, synchronization

Camshaft Position Sensor

Exhaust Electrical

NWA synchronous

On every camshaft flank if the flank ratio was not in tolerance.

Terminal 15 on

none

Exhaust camshaft autonomous synchronization, incorrect tooth flank ratio

Replace camshaft reluctor, installation fault
Signal interference
Replace NWA sensor, transmitting inverted signal

MIL 2nd DC, CAM operates in emergency default mode

Flank pattern does not match stored pattern.

0x2A96

10902

Crankshaft sensor, tooth fault

Crankshaft Position Sensor

Signal

Engine turns over, camshaft synchronized

On each synchronization gap, without loss of synchronization.

Terminal 15 on

none

Number of teeth counted during one engine rotation incorrect by less than 3 teeth.

Check signal wire for short to positive, ground, opens and interference signals
Replace crankshaft sensor

MIL 2nd DC CRK emergency default mode

Incorrect tooth number at gap without loss of synchronization

0x2A97

10903

Crankshaft sensor, gap fault

Crankshaft Position Sensor

Signal

Engine turns over, camshaft synchronized

On each tooth if the tooth time was outside the expected window. Assessment at each synchro gap.

Terminal 15 on

none

At least one invalid tooth time during the last engine rotation.

Check signal wire for short to positive, ground, opens and interference signals
Replace crankshaft sensor

MIL 2nd DC CRK emergency default mode

Tooth time outside expected window

0x29DB

10715

Smooth running, segment timing

Crankshaft Position Sensor

Signal

Misfire diagnosis is deactivated in response to detected tooth jump and/or fault in tooth recognition at crankshaft reluctor rotor.

Jump by one or two teeth

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

Always active

none

Crankshaft sensor, defective reluctor

Check and replace as indicated: Crankshaft sensor, reluctor.

none

0x2A95

10901

Crankshaft sensor, synchronization

Crankshaft Position Sensor

Signal

Engine turns over, camshaft synchronized

At each synchronization gap if synchronization has been lost.

Terminal 15 on

none

Number of teeth counted during one engine rotation incorrect by more than 2 teeth.

Check signal wire for short to positive, ground, opens and interference signals
Replace crankshaft sensor

MIL 2nd DC CRK emergency default mode

Incorrect tooth number at gap with loss of synchronization

0x29F4

10740

Catalytic-converter conversion

Catalyst

Efficiency

none

0x29F4

10740

Catalytic-converter conversion

Catalyst

Efficiency

none

0x29F5

10741

Catalytic-converter conversion 2

Catalyst

Efficiency

none

0x29F5

10741

Catalytic-converter conversion 2

Catalyst

Efficiency

none

0x2A1A

10778

Tank-venting system, function

EVAP System

Flow Check

none

TEV Check

none

Symptom is not used

0x2A1A

10778

Tank-venting system, function

EVAP System

Flow Check

none

TEV Check

none

Symptom is not used

0x2A15

10773

DMTL, minor leak

EVAP System

Leak Detection

Fuel tank system minute leakage monitor, after completion of DMTL diagnosis

After distance traveled > 200 m in driving cycle following diagnosis

Terminal 15 ON

10.95 < vehicle electrical system voltage < 14.5

1.5°C > Ambient temperature > 38°C

none

DMTL Check

none

Leak > 1 mm in the tank system

Search for leak in tank system (remember DMTL/TEV)

MIL ON

Installed in US only (initialization version)

0x2A19

10777

Tank-venting valve, activation

EVAP System

Valve

none

0x2A16

10774

DMTL, superfine leak

EVAP System

Leak Detection

Tank system minute leakage monitor

Ignition on, in driving cycle following diagnosis

Terminal 15 ON

10.95 < vehicle electrical system voltage < 14.5

1.5°C > Ambient temperature > 38°C

none

DMTL Check

none

Leak > 0.5 mm in the tank system

Search for leak in tank system/Check fuel filler cap

MIL ON

Installed in US only (initialization version)

0x2A19

10777

Tank-venting valve, activation

EVAP System

Valve

none

0x2A19

10777

Tank-venting valve, activation

EVAP System

Valve

none

0x2A1C

10780

Tank fill level, plausibility

Fuel Level Sensor

Plausibility

Excess mechanical resistance in the level sensor causes the level signal to change too slowly relative to engine fuel consumption, leading to generation of a fault memory entry

20 liters of fuel consumption required

Terminal 15, engine on

none

Immediately after engine starts

none

Mechanical seizure of level sensor in tank

Check level sensor data directly at flange
Check variation in sensor data by rocking/knocking on the tank
Carefully open the tank flange, check for binding in the float lever
Replace the fuel level sensor only if binding is found in the float lever (distorted sensor lever, bearing resists motion)

none

0x2DE2

11746

Tank fill level, right, signal

Fuel Level Sensor

Electrical

Right level sensor shorted, sensor resistance too low

90 sec.

Terminal 15, engine on

none

Sensor value too low

Check sensor resistance, determine location of open wire/short circuit (wiring harness, plug, cluster, junction box, tank)

none

0x2DE2

11746

Tank fill level, right, signal

Fuel Level Sensor

Electrical

Open wire to right-side level sensor, sensor resistance too high

90 sec.

Terminal 15, engine on

none

Sensor value too high

Check sensor resistance, determine location of open wire/short circuit (wiring harness, plug, cluster, junction box, tank)

none

0x2F6C

12140

Exhaust-gas flap, activation

No Info

Exhaust valve control-activation monitor. Component must be installed. Tester must be used to trigger component for 10 sec.

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK proceed to check component (which and how?)

No display

none

0x2F6C

12140

Exhaust-gas flap, activation

No Info

Exhaust valve control-activation monitor. Component must be installed. Tester must be used to trigger component for 10 sec.

2 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK proceed to check component (which and how?)

No display

none

0x2F6C

12140

Exhaust-gas flap, activation

No Info

Exhaust valve control-activation monitor. Component must be installed. Tester must be used to trigger component for 10 sec.

2 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK proceed to check component (which and how?)

No display

none

0x2EFE

12030

Electric fan, activation

No Info

PWM > 10%

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

Ambient temperature > -20°C

5 sec.

none

Open circuit

Check voltage supply to fan. (If there is no power to the fan, or the voltage supply is intermittent, this fault code will be entered in the fault memory.
Check wiring. Repair if defective. If wiring is OK, proceed to check component

no external display

An inoperative E fan can also cause the engine to overheat.

0x2A00

10752

Secondary-air system

Secondary Air System

Flow Check

Activation conditions: - Engine start - Secondary air-injection must be active - Ambient temperature >3°C -3.8°C < Coolant temperature < 50.3°C

40 sec.

Terminal 15, engine start

Vehicle electrical system voltage (battery voltage between 7 & 15 V)

Ambient temperature > 3°C, coolant start temperature between 3.8°C & 50.3°C

none

EOL test of secondary air-injection system. (Do not run more than 5 EOL tests in succession; the SA pump can overheat).

none

Potential cause - Connection between secondary air-injection valve and exhaust bank 1 (in engine block) is obstructed.

Remove secondary air-injection valve and clean the passage to Bank 1 (in engine block)
Install valve again and run through EOL test. If the malfunction is registered again, repeat steps 1 and 2.

MIL

none

0x2A00

10752

Secondary-air system

Secondary Air System

Flow Check

Activation conditions: - Engine start - Secondary air-injection must be active - Ambient temperature >3°C -3.8°C < Coolant temperature < 50.3°C

40 sec.

Terminal 15, engine start

Vehicle electrical system voltage (battery voltage between 7 & 15 V)

Ambient temperature > 3°C, coolant start temperature between 3.8°C & 50.3°C

none

EOL test of secondary air-injection system (Do not run more than 5 EOL tests in succession; the SA pump can overheat)

none

Potential cause - Connection between secondary air-injection valve and exhaust bank 2 (in engine block) is obstructed.

Remove secondary air-injection valve and clean the passage to Bank 2 (in engine block)
Install valve again and run through EOL test. If the malfunction is registered again, repeat steps 1 and 2.

MIL

none

0x2F4E

12110

Vehicle speed, signal

Vehicle Speed Sensor

Electrical

Speed signal monitor

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

100 ms

none

Dual fault: No speed information available from hardware signal or from CAN

Check CAN link between DSC and DME

US: MIL ON ECE: No MIL

This defect location applies only to the CAN fault. Active only when an active hardware signal fault (12111) is present.

0x2F4F

12111

Vehicle speed, plausibility

Vehicle Speed Sensor

Electrical

Speed signal monitor Mass airflow > 272 mg/stroke and N > 2400 rpm (manual trans) N > 2820 rpm (automatic) and speed = 0 km/h for 5.0 sec.

5 sec.

Terminal 15, engine on

Voltage in onboard electrical system > 10 V

none

5.0 sec.

none

no speed signal available! (defective rear right wheelspeed sensor)

Read diagnostic control module's fault memory from DSC (defective rear right wheelspeed sensor)

None Default value from CAN

none

0x2ADF

10975

Idle air control, engine speed

Idle Speed Control

RPM

none

0x2ADF

10975

Idle air control, engine speed

Idle Speed Control

RPM

Monitor for idle control Idle = ON Speed = 0 km/h. After roughly 120 sec., depends on start temperature

none

Terminal 15, engine on

none

20 sec.

none

Impossible to adjust idle speed to +-100 relative to specified RPM

Note any other fault code entries and repair the associated problems! Check all load-responsive servo actuators such as Valvetronic and the throttle valve for stored control module fault memory entries and malfunctions! (check injection and induction system as indicated)

MIL on in 2nd driving cycle

US only

0x2F58

12120

Automatic starting, activation

No Info

Automatic starter activation-control monitor. Convenience start relay initialized. Start relay installed.

1 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

0.25s at N=0.5 sec. at N > 750 rpm

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK, proceed to check component (start relay).

no external display

none

0x2F58

12120

Automatic starting, activation

No Info

Automatic starter activation-control monitor. Convenience start relay initialized. Start relay installed.

1 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

0.25s at N=0.5 sec. at N>750 RPM

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component (starter relay).

no external display

none

0x2F58

12120

Automatic starting, activation

No Info

Automatic starter activation-control monitor. Convenience start relay initialized. Start relay installed

1 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

0.25 s at N=0.5 sec. at N>750 rpm

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component (starter relay).

no external display

none

0x2F7B

12155

Oil-pressure switch, plausibility

No Info

Oil pressure switch monitor

Engine shutdown: continues roughly 8 sec. after engine is switched off.

Engine speed = 0 Control module in post-operational shutdown phase

Voltage in onboard electrical system > 10 V

60°C < engine temperature < 150°C

3 sec.

none

Open wire Switch seizes

Check wire from oil pressure switch. If not OK --> Repair wire If OK -->
Replace switch
Switch should change position when engine is started and then shut down (ground connection)

Possible display in the MMI will vary according to whether the switch seizes while open or closed.

Oil pressure cannot be monitored if switch is defective.

0x30C6

12486

Engine-oil-pressure sensor, plausibility

No Info

Commercial vehicle > 0

0.2

Terminal 15

none

>-10°C

none

Jump in specified pressure, specified pressure ramp

Analogous to oil pressure signal

Oil pressure signal seized

Replace oil pressure sensor

Implementation on at Prg. Version 500

0x30C3

12483

Engine-oil-pressure sensor, signal

No Info

Signal monitoring, oil pressure data

2 sec.

Terminal 15 ON

Voltage in onboard electrical system > 9.15 V

none

Sensor wire shorted to ground or open circuit in wire.

Perform electrical check on sensor wire and power-supply wires.
Visual inspection of plug-in contacts (on component and DME ends).
Replace sensor.

No message currently available!

none

0x30C3

12483

Engine-oil-pressure sensor, signal

No Info

Signal monitoring, oil pressure data

2 sec.

Terminal 15 ON

Voltage in onboard electrical system > 9.15 V

none

Sensor wire shorted to positive

Perform electrical check on sensor wire and power-supply wires
Visual inspection of plug-in contacts (on component and DME ends)
Replace sensor

No message currently available!

none

0x30C5

12485

Engine-oil pump, mechanical: engine-oil pressure

No Info

Commercial vehicle >0 + Stored operating coordinate reached (depends on NKW+Tmot)

0.2

Terminal 15

none

>-10°C

none

Jump in specified pressure, specified pressure ramp.

Analogous to oil pressure signal

Pump control plunger is seizing

Replace oil pump

Yes, if it allows oil pressure to drop to unacceptable level.

Activation only in Prg. Version 500

0x2F63

12131

Brake-light switch, plausibility

Brake Switch

Electrical

Brake light switch monitor. Depress brake pedal repeatedly

If the BTS is still OK the fault will be registered immediately when the brake pedal is depressed. If the plug is disconnected the fault will be registered after approximately 40 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

500 ms

none

The brakelight switch is sticking or has an intermittent contact. Defective signal wire.

Check to determine whether foreign matter or objects (dirt) are causing the switch to hang.
Electrical check on wire a. --> If not OK, repair wire. b. --> If OK, replace switch.
Check by depressing the brake pedal repeatedly. No fault should be stored.

If the switch is defective the cruise control or ACC will be deactivated. Display: - Defective speed control or distance control failure

The switch is also evaluated by the other control modules. Messages are 'Gear selection possible without brake application' and 'Starting possible without brake application'

0x2EF5

12021

Map thermostat, activation

Thermostat

Electrical

Control-activation with 5% < PWM < 95%

10 sec.

Terminal 15 ON Engine start

Voltage in onboard electrical system > 10 V

none

3 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component (electrical check).

no external display

none

0x2EF5

12021

Map thermostat, activation

Thermostat

Electrical

Control-activation with 5% < PWM < 95%

10 sec.

Terminal 15 ON Engine start

Voltage in onboard electrical system > 10 V

none

3 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component (electrical check).

no external display

none

0x2EF5

12021

Map thermostat, activation

Thermostat

Electrical

Control-activation with 5% < PWM < 95%

10 sec.

Terminal 15 ON Engine start

Voltage in onboard electrical system > 10 V

none

3 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK, proceed to check component (electrical check).

no external display

none

0x2AB2

10930

DME, internal fault: RAM

ECM/TCM

RAM

RAM checksum test This test is executed once, while the control module is booting.

No debounce. Fault can be reset by clearing fault memory.

Immediately after wakeup in dormant control module

none

Internal RAM in DME checksum fault.

Determine whether fault is stored again after carrying out the following procedure. If yes: Replace DME.

Clear fault memory
Ignition off, allow vehicle to assume complete dormant status
Ignition on
Read out stored fault codes from fault memory

none

Internal control module fault

0x2AB2

10930

DME, internal fault: RAM

ECM/TCM

RAM

RAM checksum test

The checksum will be recalculated in response to data manipulation, leading to a deviation that causes fault code registration.

none

Internal TPU-RAM checksum fault

none

0x2D67

11623

DME, internal fault: monitoring, processors

ECM/TCM

RAM

Internal control-module fault, RAM processor fault

immediately

Terminal 15 ON

Voltage in onboard electrical system >= 10 V

none

immediately

none

Possible sources of this fault are: faults in the data request and response process between the main computer and the process-monitor computer in the control module (on both sides, main computer and monitor computer) - the level 2 ROM check detects an fault - the level 2 RAM check detects an fault - the level 2 program flow monitor detects an fault.

Ensure that correct software and data have been flash-programmed; repeat flash-programming as indicated. If frequency > 3 Replace DME

MIL OFF. EML ON. CC: Power loss, engine malfunction.

none

0x2D67

11623

DME, internal fault: monitoring, processors

ECM/TCM

ROM

Internal control-module fault, read memory processor fault

immediately

Terminal 15 ON

Voltage in onboard electrical system >= 10 V

none

immediately

none

Ensure that correct software and data have been flash-programmed; repeat flash-programming as indicated. If frequency > 3. Replace DME.

MIL OFF. EML ON CC: Power loss, engine malfunction.

none

0x2D67

11623

DME, internal fault: monitoring, processors

No Info

Internal control-module fault, general processor fault

immediately

Terminal 15 ON

Voltage in onboard electrical system >= 10 V

none

immediately

none

Ensure that correct software and data have been flash-programmed; repeat flash-programming as indicated. If frequency > 3. Replace DME.

MIL OFF. EML ON. CC: Power loss, engine malfunction.

none

0x2D67

11623

DME, internal fault: monitoring, processors

No Info

Internal control-module fault, processor fault in monitor computer

immediately

Terminal 15 ON

Voltage in onboard electrical system > = 10 V

none

immediately

none

Ensure that correct software and data have been flash-programmed; repeat flash-programming as indicated. If frequency > 3, Replace DME

MIL OFF, EML ON, CC: Power loss, engine malfunction.

none

0x2ECD

11981

Generator, electric

No Info

Commercial vehicle > 350 RPM, no BSD communications fault

25 sec.

Terminal 15 ON, no BSD fault

System voltage

none

Phase or diode failure. Regulator control circuit failure ==> Undervoltage or overvoltage

With confirmation from restart ==> Replace alternator

Charge indicator lamp

Can occur during vehicle servicing when external power source is connected, Etc.

0x2E97

11927

Generator

No Info

El. fault

Commercial vehicle >350 RPM, No communications fault

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

25 sec.

none

Phase or diode failure. Regulator control circuit failure ==> Undervoltage or overvoltage

With confirmation from restart ==> Replace alternator

Charge indicator lamp

Can occur during vehicle servicing when external power source is connected, etc.

0x2FA3

12195

No coding

No Info

none

Terminal 15 ON

none

No code entry executed (after programming)

Perform code entry

none

Occurs after every programming session (data or program)

0x2FA3

12195

No coding

ECM/TCM

EEPROM

none

Terminal 15 ON

none

Incorrect code data in EEPROM

Recode DME and clear fault memory, replace DME if fault occurs more than once.

none

0x2FA4

12196

Incorrect data record

No Info

Always active

none

Terminal 15 ON

none

Timeout on VEHICLE VERSION message from CAS

Check CAS and/or CAN link to CAS

Reduced output

Occurs when vehicle version message from CAS is missing

0x2F12

12050

Air-conditioning compressor, activation

No Info

Air conditioner relay control-activation monitor; air conditioning initialized. Briefly triggered by relay. Air conditioning installed and switched on.

1 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

5 sec.

none

Open circuit

Check wiring. Repair if defective. If wiring is OK, proceed to check component, A/C compressor relay.

no external display

none

0x2F12

12050

Air-conditioning compressor, activation

No Info

Air conditioner relay control-activation monitor; air conditioning initialized. Briefly triggered by relay. Air conditioning installed and switched on.

1 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

5 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component, A/C compressor relay.

no external display

none

0x2F12

12050

Air-conditioning compressor, activation

No Info

Air conditioner relay control-activation monitor; air conditioning initialized. Briefly triggered by relay. Air conditioning installed and switched on.

1 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK proceed to check component, a/c compressor relay

no external display

none

0x2F85

12165

DME, internal fault: interior-temperature sensor, signal

ECM/TCM

Internal Temperature Sensor

Control module internal temperature sensor monitor

5 sec.

Terminal 15 ON

none

Time after end of start phase > 10 sec.

none

Short to ground in sensor wire

Replace DME, as sensor is internal component.

none

Voltage range diagnosis

0x2F85

12165

DME, internal fault: interior-temperature sensor, signal

ECM/TCM

Internal Temperature Sensor

Control module internal temperature sensor monitor

5 sec.

Terminal 15 ON

none

Time after end of start phase > 10 sec.

none

Sensor wire shorted to positive or open circuit in wire

Replace DME, as sensor is internal component

none

Voltage range diagnosis

0x2ACB

10955

DME master relay, activation

ECM/PCM Power Relay

Electrical

Main relay monitoring. Main relay must have opened.

none

First Terminal 15 OFF (wait until main relay opens) then Terminal 15 ON (and leave ON)

Voltage in onboard electrical system > 10 V

none

System responds to fault by storing fault code within approximately 1 sec.

none

Main relay fails to make owing to mechanical problems. (or contacts close only with lag) Or the connecting wire to the DME has a short circuit to UBatt or is open.

Check wiring. Repair if defective. If wiring is OK, proceed to check component.

none

When you encounter this fault, note that in all likelihood other diagnostic fault codes will also be entered in the fault memory (throttle plate potentiometer 1 and 2, voltage supply to pedal-position sensor, etc.), as the main relay's response lag or refusal to make will prevent the power supply from reaching these components.

0x2ACB

10955

DME master relay, activation

ECM/PCM Power Relay

Electrical

Main relay monitoring Main relay is deactivated by DME (8 sec. after Terminal 15 off)

none

First Terminal 15 ON then OFF (then leave OFF)

Voltage in onboard electrical system > 10 V

none

System responds to fault by storing fault code within approximately 8.9 sec.

none

Main relay fails to disengage owing to mechanical factors. (melted together) Or the wire to the DME is shorted to ground.

Check wiring. Repair if defective. If wiring is OK, proceed to check component

none

0x2EFE

12030

Electric fan, activation

No Info

PWM > 10%

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

Ambient temperature > -20°C

11 sec.

none

Short circuit to ground in wire or component.

Check wiring. Repair if defective. If wiring is OK, proceed to check component (electrical check)

no external display

An inoperative E fan can also cause the engine to overheat.

0x2EFE

12030

Electric fan, activation

No Info

PWM > 10%

5 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

Ambient temperature > -20°C

5 sec.

none

Wire is shorted to positive, or a short to positive is present in the component

Check wiring. Repair if defective. If wiring is OK proceed to check component (electrical check)

no external display

An inoperative E fan can also cause the engine to overheat.

0x2F64

12132

Brake-light test switch, plausibility

No Info

Brake light switch monitor. Depress brake pedal repeatedly

If the BLS is still OK, the fault will be stored immediately as soon as the brake pedal is depressed. If the plug is disconnected the BLS fault will be registered after approximately 40 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

500 ms

none

The brakelight test switch is sticking or has an intermittent contact. Defective signal wire.

Check to determine whether foreign matter or objects (dirt) are causing the switch to hang.
Electrical check on wire a. --> If not OK, repair wire. b. --> If OK, replace switch.
Check by depressing the brake pedal repeatedly. No fault should be stored.

If the switch is defective the cruise control or ACC will be deactivated. Display: - Defective speed control or distance control failure

The switch is also evaluated by the other control modules. Messages are 'Gear selection possible without brake application' and 'Starting possible without brake application'

0x2F67

12135

Clutch switch, signal

No Info

none

0x2F67

12135

Clutch switch, signal

No Info

none

0x2FC6

12230

Energy-saving mode active

No Info

none

0x2FC6

12230

Energy-saving mode active

No Info

none

0x2FAB

12203

Active engine mount, electric

No Info

none

0x2FC6

12230

Energy-saving mode active

No Info

none

0x2FAB

12203

Active engine mount, electric

No Info

none

0x2FAB

12203

Active engine mount, electric

No Info

none

0x2E97

11927

Generator

No Info

Overtemperature fault

Commercial vehicle >350 RPM, No communications fault

Terminal 15 ON

Voltage in onboard electrical system > 10 V

none

25 sec.

none

Air cooling obstructed by leaves, Etc. Overall thermal overload stemming from extremely negative operating profile possible.

Inspect alternator for unobstructed air current.

No Info

Important! Fault debounce leads to reduced availability of comfort and convenience accessories

0x2ECF

11983

Generator, overtemperature

No Info

Commercial vehicle > 350 RPM, no BSD communications fault

25 sec.

Terminal 15 ON, no BSD fault

none

Alternator airflow obstructed. Thermal overload from unfavorable driving profile possible.

Inspect alternator for unobstructed air current.

none

0x2A35

10805

Valvetronic, eccentric shaft sensor: guide

Valvetronic (VVT)

Guiding Sensor

No faults related to the sensor voltage supply should be present (fault code #10800) and there should be no faults or SPI parity faults related to the VVT sensor (fault code #10801) or (fault code #10802)

20 ms

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

20 ms

none

Missing reluctor on VVT sensor

Inspect to determine whether VVT sensor reluctor is installed correctly.
Replace VVT sensor if Item 1 is OK

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A31

10801

Valvetronic, eccentric shaft sensor: guide

Valvetronic (VVT)

Guiding Sensor

VVT lead sensor monitor. No faults related to the sensor's voltage supply should be present (fault code 10800).

100 ms

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

100 ms

none

analog, 0-5 V

Open circuit, or short to positive or ground, or signal wire between VVT lead sensor and DME. Open cable shield on VVT sensor wire (no ground connection).

If fault codes (#10801) and (#10802) are simultaneously stored in the fault memory, proceed to check the following

Dual fault is stored when VVT sensor is not connected to the DME. Is VVT sensor connected to the wiring harness? If not: Plug in and check wiring harness between DME and VVT sensor. Determine whether the VVT sensor wire shield is grounded at the DME (PIN 7-10) and sensor (PIN 4).

Replace VVT sensor. If only fault code (#10801) is entered

Check signal wire (VVT sensor PIN 1, PIN 3) between VVT sensor and DME for breakage or short circuits and corroded plugs.
Determine whether a

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A36

10806

Valvetronic, eccentric shaft sensor: reference

Valvetronic (VVT)

Reference Sensor

20 ms

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

20 ms

none

Missing reluctor on VVT sensor

Inspect to determine whether VVT sensor reluctor is installed correctly.
Replace VVT sensor if Item 1 is OK

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN.

none

0x2A32

10802

Valvetronic, eccentric shaft sensor: reference

Valvetronic (VVT)

Reference Sensor

VVT reference sensor monitor. No faults related to the sensor's voltage supply should be present (fault code 10800).

100 ms

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

100 ms

none

analog, 0-5 V

Open circuit, or short to positive or ground, or signal wire between VVT reference sensor and DME. Open cable shield on VVT sensor wire (no ground connection)

If faults (#10801) and (#10802) are simultaneously stored in the fault memory, proceed to check the following

Dual fault is stored when VVT sensor is not connected to the DME. Is VVT sensor connected to the wiring harness? If not: Plug in and check wiring harness between DME and VVT sensor.

Replace VVT sensor. If only fault code (#10802) is entered

Check signal wire (VVT sensor PIN 7, PIN 9) between VVT sensor and DME for breakage or short circuits and corroded plugs.
Determine whether a cycle signal is visible every 1 ms at sensor Pin
(Ignition on!). If yes, proceed to Item
If no, this signal wire is

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A37

10807

Valvetronic, eccentric shaft sensor: plausibility

Valvetronic (VVT)

Sensors

VVT sensor plausibility monitor

No faults regarding the sensor voltage supply should be present (fault code #10800)
No sensor faults should be present (fault codes #10801 to #10806)

50 ms

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

50 ms

none

The VVT sensor signal is not plausible.

Check reluctor on VVT sensor to ensure correct installation and firm seating.
Replace VVT sensor if Item 1 is OK

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A47

10823

Valvetronic, eccentric shaft sensor: plausibility

Valvetronic (VVT)

Sensors

Sensor signal monitor (cumulative sensor faults). Always active

20 ms

Terminal 15 ON

none

100 ms

none

Open sensor wire; reluctor missing; VVT sensor defective

Examination of sensor plugs, sensor wiring.
If Item 1 is OK, inspect the reluctor.
If the reluctor is OK, replace VVT sensor.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A30

10800

Valvetronic, eccentric shaft sensor: power supply

Valvetronic (VVT)

Power Supply Sensors

Monitoring of voltage supply to eccentric shaft. Nominal value for voltage supply sensor = 5.0 V

Sensor power-supply voltage > 5.25 V

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

10 ms

none

analog, 5 V

Short to positive on VVT sensor power-supply wire

Check sensor power supply voltage with multimeter. Supply voltage must lie between 4.75 V and 5.25 V.
If result is outside specified range: Check power-supply wire to VVT sensor and check plug.
If contact is stretched or corroded: Replace plug on VVT sensor
If wiring harness is defective: Replace wiring harness between DME and VVT sensor.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A46

10822

Valvetronic, adaptation

Valvetronic (VVT)

Self-Learning Function

Monitoring of VVT system for mechanical wear.

100 ms

none

Tmot > 60°C

100 ms

none

Mechanical wear

Remove the valve cover and inspect for indications of mechanical wear (such as rocker arm wear, etc.)

none

0x2A46

10822

Valvetronic, adaptation

Valvetronic (VVT)

Self-Learning Function

none

0x2A39

10809

Valvetronic, adjustment range

Valvetronic (VVT)

Self-Learning Function

Adjustment range monitor. When travel limit initialization routine is executed. (travel limit initialization routine is automatically executed in a 5 hour (engine operating hours) cycle or with 'initialize travel limits' tester request.

following renewed successful execution of the travel limit initialization routine

Terminal 15 ON

Electrical system voltage. Terminal 87 > 10.0 V

none

immediately

Initialize for VVT travel limit

none

No travel stops initialized/present

Use tester request to repeat the VVT travel limit initialization routine
If Item No. 1 is not OK, it will be necessary to check the VVT mechanical components/VVT servo motor

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A30

10800

Valvetronic, eccentric shaft sensor: power supply

Valvetronic (VVT)

Power Supply Sensors

Monitoring of voltage supply to eccentric shaft. Nominal value for voltage supply sensor = 5.0 V

Sensor power-supply voltage < 4.75 V

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

10 ms

none

analog, 5 V

Short to ground on VVT sensor power wire

Check sensor power supply voltage with multimeter. Supply voltage must lie between 4.75 V and 5.25 V.
If result is outside specified range: Check power-supply wire to VVT sensor and check plug.
If contact is stretched or corroded: Replace plug on VVT sensor
If wiring harness is defective: Replace wiring harness between DME and VVT sensor.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A39

10809

Valvetronic, adjustment range

Valvetronic (VVT)

Self-Learning Function

following renewed successful execution of the travel limit initialization routine

Terminal 15 ON

Electrical system voltage. Terminal 87 >10.0 V

none

immediately

Initialize for VVT travel limit

none

The initialized range is outside the approved tolerance range.

Use tester request to repeat the VVT travel limit initialization routine.
If Item No. 1 is not OK, it will be necessary to check the VVT mechanical components/VVT servo motor.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A39

10809

Valvetronic, adjustment range

Valvetronic (VVT)

Self-Learning Function

following renewed successful execution of the travel limit initialization routine

Terminal 15 ON

Electrical system voltage Terminal 87 >10.0 V

none

immediately

Initialize for VVT travel limit

none

No initialization for lower travel limit

Use tester request to repeat the VVT travel limit initialization routine
If Item No. 1 is not OK, it will be necessary to check the VVT mechanical components/VVT servo motor

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A33

10803

Valvetronic, eccentric shaft sensor: guide

Valvetronic (VVT)

Guiding Sensor

Internal VVT lead sensor monitor No faults related to the sensor voltage supply should be present (fault code #10800) and there should be no faults or SPI parity faults related to the VVT sensor (fault code #10801) or (fault code #10802)

20 ms

Terminal 15 ON

Electrical system voltage terminal 87 >10.0 V

none

20 ms

none

Internal fault in VVT sensor

Sensor replacement

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A34

10804

Valvetronic, eccentric shaft sensor: reference

Valvetronic (VVT)

Reference Sensor

Internal VVT reference sensor monitor. No faults related to the sensor voltage supply should be present (fault code #10800) and there should be no faults or SPI parity faults related to the VVT sensor (fault code #10801) or (fault code #10802)

20 ms

Terminal 15 ON

Electrical system voltage terminal 87 >10.0 V

none

20 ms

none

Internal fault in VVT sensor

Sensor replacement

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A38

10808

Valvetronic, monitoring, sluggish movement

Valvetronic (VVT)

Position Control

none

0x2A38

10808

Valvetronic, monitoring, sluggish movement

Valvetronic (VVT)

Position Control

VVT system monitoring for binding and resistance to motion. Always active when no other VVT fault is present.

55 ms

Terminal 15 ON

Electrical system voltage terminal 87 >10.0 V

none

55 ms

none

Specified sensor value is not reached (not quickly enough).

Use tester to request initialization of travel limits and note whether travel limit initialization routine executes without problems.
If Item 1 is not OK, replace VVT motor and repeat Item 1
If replacing VVT motor fails to resolve the problem: Open the valve cover and check the VVT for mechanical binding and seizure.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A45

10821

Valvetronic, actuator motor: plausibility

Valvetronic (VVT)

System Current

none

0x2A3A

10810

Valvetronic, internal fault

Valvetronic (VVT)

ECM

E2PROM fault

Fault set immediate without debounce

Terminal 15 ON

none

Malfunction in control module electronic circuitry

Ignition off, wait for control module to return to dormant ""sleep"" state, run travel limit initialization routine again or trigger travel limit initialization routine manually

Limp-home operation 1

none

0x2A3D

10813

Valvetronic, actuator motor: activation

Valvetronic (VVT)

Control Motor

Short circuit to voltage supply

Fault set immediate without debounce

Terminal 15 ON

Battery voltage > 6.99 V

none

Malfunction in control module electronic circuitry

Ignition off, let control module return to dormant state as indicated, restart
If Item 1 is not OK, it will be necessary to check the electronics in the control module

Emergency default mode 2

none

0x2A3D

10813

Valvetronic, actuator motor: activation

Valvetronic (VVT)

Control Motor

Short to ground

Fault set immediate without debounce

Terminal 15 ON

Battery voltage > 6.99 V

none

Malfunction in control module electronic circuitry

Ignition off, let control module return to dormant state as indicated, restart
If Item 1 is not OK, it will be necessary to check the electronics in the control module

Emergency default mode 2

none

0x2A3D

10813

Valvetronic, actuator motor: activation

Valvetronic (VVT)

Control Motor

Short circuit between motor wires

Fault set immediate without debounce

Terminal 15 ON

Battery voltage > 6.99 V

none

Disconnected VVL motor wires
Malfunction in control module electronics

Check wiring to VVT motor
Ignition off, allow control module to assume dormant state as indicated, restart
If Items 1 and 2 are not OK, it will be necessary to inspect the control module's electronic circuitry

Emergency default mode 2

none

0x2A3F

10815

Valvetronic, actuator motor: power supply

Valvetronic (VVT)

Power Supply Control Motor

VVT servo motor power supply monitor

Power-supply voltage > 17 V

Terminal 15 ON

Electrical system voltage terminal 87 >10.0 V

none

Fault code is stored following detection of fault (10 ms)

none

Short circuit to positive in VVT power supply

Check VVT power supply voltage with multimeter. Supply voltage must lie between 5.75 V and 17 V.
If result is outside specified range: Inspect the power-supply wire to the VVT pins and check the plug.
If contact is stretched or corroded: Replace plug
If wiring harness is defective: Replace wiring harness.

MIL ON

none

0x2A3F

10815

Valvetronic, actuator motor: power supply

Valvetronic (VVT)

Power Supply Control Motor

VVT servo motor power supply monitor

Power supply voltage < 5.75 V

Terminal 15 ON

Electrical system voltage terminal 87 > 10.0 V

none

Fault code is stored following detection of fault (10 ms)

none

Short circuit to ground in VVT power supply.

Check VVT power supply voltage with multimeter. Supply voltage must lie between 5.75 V and 17 V.
If result is outside specified range: Inspect the power-supply wire to the VVT pins and check the plug.
If contact is stretched or corroded: Replace plug
If wiring harness is defective: Replace wiring harness.

MIL ON

none

0x2A3C

10812

Valvetronic relay, activation

Valvetronic (VVT)

Power Supply Control Motor

The voltage at the capacitors is monitored. If this is below an offset of the battery voltage an fault symptom is registered

0.05

Main relay ON

none

Malfunction in control module electronic circuitry

Ignition off, let control module return to dormant state as indicated, restart
If Item 1 is not OK, it will be necessary to check the electronics in the control module

Emergency default mode 2

none

0x2A77

10871

Control module, internal fault: Valvetronic output stage

ECM

Valvetronic (VVT) Current

Excess current recognized on high side or low side transistors (ATIC61 diagnosis)

0.2

Terminal 15 ON

Battery voltage > 9.953125 V and battery voltage < 25.898438 V

none

Shorty circuit in the H-bridge (for additional information refer to possible fault code entries in short circuit diagnosis, 'DR_SC_VVL'.

Ignition off, let control module return to dormant state as indicated, restart
If Item 1 is not OK, it will be necessary to check the electronics in the control module

Fault entry in info memory only

none

0x2A77

10871

Control module, internal fault: Valvetronic output stage

ECM

Valvetronic (VVT) Voltage

Undervoltage in power supply to driver circuit has been detected (ATIC61 diagnosis)

0.2

Terminal 15 ON

Battery voltage > 9.953125 V and battery voltage < 25.898438 V

none

H bridge voltage supply owing to (for instance)

battery voltage too low
VVJL relay fails to make, or
other problems in the control module electronic circuitry

Ignition off, let control module return to dormant state as indicated, restart
If Item 1 is not OK, it will be necessary to check the electronics in the control module.

Fault entry in info memory only

none

0x2A44

10820

Valvetronic, power limitation

Valvetronic (VVT)

Limp Home Request

VVT must be in emergency operation mode (meaning that no VVT sensor signal is present) and unit travels to upper travel limit at 30% pulse-duty factor for VVT motor.
The mass induction airflow is employed as an index to determine whether the maximum VVT stroke has been reached.

after Terminal 15 switch and/or always active if DME is awake.

Terminal 15 ON

none

20 ms

none

A dual VVT sensor fault must be entered in the fault memory.
Check for mechanical binding in mechanical components in VVT system (VVT servo motor, VVT gears, VVT eccentric shaft...)

Check and repair the sensor defect using the correct repair instructions.
Check HFM mass airflow signal
Check VVT mechanical system (VVT servo motor, VVT gearset, VVT eccentric shaft...)

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A42

10818

Valvetronic, position at new start: plausibility

Valvetronic (VVT)

Value Comparison

When the DME is activated (wake-up) it assesses the current VVT sensor angle based on the last VVT sensor angle prior to shutdown. If there is a substantial difference in the two angles, the operative assumption will that substantial repairs have been carried out on the cylinder head. The VVT travel limit positions must be re-initialized. No VVT sensor faults should be present (#10800, #10801,#10802).

Following successful travel limit initialization routine (can be initiated by tester), active only once at moment when system starts (DME wake-up).

Terminal 15 ON

none

immediately

Initialize for VVT travel limit

none

Mechanical repairs may have been carried out on the cylinder head.

Conduct travel limit initialization routine using tester for activation. Delete stored fault codes from DME fault memory and initiate dormant vehicle state. Repeat procedure in case of doubt.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A41

10817

Valvetronic, electrical overload protection

Valvetronic (VVT)

Overload Protection

Electrical overload protection. The engine management monitors the VVT motor's current draw. If the monitored current draw exceeds a defined threshold for several seconds the VVT system is deactivated (VVT emergency operation mode), and the engine reverts to throttled operation. Always active provided that fault codes #10813,#10816, #10819 are not present.

Warning threshold: 112°C DME internal driver circuit temperature. Deactivation threshold: 126°C internal DME driver circuit temperature

none

Loose reluctor on VVT sensor
Defective VVT servo motor (interturn short circuit causes low resistance in motor winding)
Short circuit in wiring harness (wire between VVT servo motor and DME)

Check for correct reluctor attachment at VVT sensor.
Defective VVT servo motor (for instance, interturn short circuit) Check servo motor and replace as indicated (Clear fault memory/switch ignition terminals)
Check VVT motor wiring harness between VVT motor and DME for shorts between both VVT motor wires and vehicle ground.

MIL ON

none

0x2A40

10816

Valvetronic, thermal overload protection

Valvetronic (VVT)

Overload Protection

Monitoring of maximum transistor temperature

0.03

Terminal 15 ON

none

Maximum transistor temperature too high

Repeat the diagnostic routine once the vehicle cools
If Item 1 is not OK, it will be necessary to proceed to an examination of the control module's electronic circuitry

Emergency default mode 2

none

0x2A3E

10814

Valvetronic, actuator motor: overload

Valvetronic (VVT)

Overload Protection

Monitoring of servo motor overload; The VVT servo motor temperature is calculated in the DME using a model. The first stage occurs when it heats beyond a warning threshold (fault #10819, fault class 2). This is 190°C (VVT motor temperature) and causes the VVT to revert to operation in its emergency mode. If the VVT motor were to overheat even further, the VVT system would be completely deactivated upon reaching the deactivation threshold (200°C VVT motor temperature).

Warning threshold: 190°C VVT Servo motor temperature. Deactivation threshold: 200°C VVT servo motor temperature

Terminal 15 ON

none

Fault code is entered immediately as soon as VVT motor reaches the critical level.

none

A model is employed to calculate the VVT servo motor's temperature in the DME. The first stage occurs when it heats beyond a warning threshold (fault code #10819, fault class 2). This is 190°C (VVT motor temperature) and causes the VVT to revert to operation in its emergency mode. If the VVT motor were to overheat even further, the VVT system would be completely deactivated upon reaching the deactivation threshold (200°C VVT motor temperature). Overheated VVT motor (based on model calculations, no monitored figures). Defective VVT motor.

Check VVT servo motor
Allow servo motor to cool, Clear fault memory and verify that DME software is the most recent version.
DO NOT replace DME!

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A43

10819

Valvetronic, thermal overload protection: warning threshold

Valvetronic (VVT)

Overload Protection

The engine-management system monitors the VVT motor's current draw. If the monitored current draw exceeds a defined threshold for several seconds the VVT system is deactivated (VVT emergency operation mode), and the engine reverts to throttled operation.

always active when DME is awake current threshold roughly 24A

Terminal 15 ON

none

immediately

none

Loose reluctor on VVT sensor
Defective VVT servo motor (soft interturn short circuit makes resistance too low in motor winding)
Short circuit in wiring harness (wire between VVT servo motor and DME)
Abuse of accelerator pedal module. Brief, rapid repeated pressure on the accelerator pedal extending over a period of time increases current flow within the VVT system.

Check for correct reluctor attachment at VVT sensor.
Defective VVT servo motor (for instance, interturn short circuit) Check servo motor and replace as indicated
Check wiring harness from VVT motor to DME for shorts between the two VVT wires and vehicle ground.
If abuse is suspected: Clear fault memory from DME

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A43

10819

Valvetronic, thermal overload protection: warning threshold

Valvetronic (VVT)

Overload Protection

A temperature model is employed to monitor the VVT servo motor. When the calculated VVT motor temperature rises beyond the warning threshold this fault code is entered.

Always active when DME is awake VVT motor temperature: Warning threshold 190°C

Terminal 15 ON

none

immediately

none

A temperature model is employed to monitor the VVT servo motor. When the calculated VVT motor temperature rises beyond the warning threshold (190°C) this fault code is entered.

Check VVT servo motor
Allow engine to cool, let vehicle return to dormant state, Clear fault memory and verify that DME has most recent software version.

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2A44

10820

Valvetronic, power limitation

No Info

none

0x2A43

10819

Valvetronic, thermal overload protection: warning threshold

Valvetronic (VVT)

Overload Protection

The temperature of the VVT driver circuit in the DME is monitored, and the system responds to overheating by reverting to VVT emergency mode operation - the vehicle continues to operate, but in throttled mode. Incorrect use of the pedal-position sensor, consisting of rapid, repeated pressure extending over several minutes heats up the VVT driver circuit in the DME, leading to its deactivation when it reaches a critical level.

after Terminal 15 switch and/or always active if DME is awake. VVT driver circuit in the DME: Warning threshold 112°C

Terminal 15 ON

none

immediately

none

Loose reluctor on VVT sensor. (vibrations in position determination lead to overheating of the VVT driver circuit within the DME)
EBOX fan fails owing to loose plug-in connection, open wire, defective EBOX fan.
Incorrect installation of DME in the EBOX (EBOX fan must be positioned to ventilate DME).
Air openings from vehicle interior to EBOX obstructed.
Short in wiring harness between VVT servo motor and DME.
Defective DME

If no tampering/abuse can be detected the following tests should be carried out

Check for correct reluctor attachment at VVT sensor.
Use tester to manually activate the E-box fan for acoustic check.
DME installed according to specification and check to verify installation of spacer plate (to guide airflow in E-Box).
Check wiring harness between VVT motor and DME for soft shorts between the two VVT motor wires and vehicle ground
Defective VVT servo motor (for instance, interturn short circuit) - Replace servo motor and determine whether malfunction is still present (Clear fault

ECE: No warning message. Engine reverts to VVT emergency backup mode (throttled operation) US: OPEN

none

0x2D29

11561

Differential-pressure sensor, intake manifold: plausibility

Differential Pressure Sensor

Pressure

Differential pressure sensor monitor 6% <. Relative charge factor <120% -20° <. Induction air temperature sensor < 85°C 560 rpm <. Engine speed < 7200 rpm. Time after start > 30 sec. regardless of EVAP active/inactive.

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system >= 10 V

Coolant temperature > -10°C

4.4 sec.

none

MIN Fault (monitored intake manifold pressure (absolute) too low) - Incorrect throttle plate angle - Vacuum sensor fault

Visual inspection of vacuum sensor plug contacts.
Check wiring between vacuum sensor and DME.
Check induction system/crankcase for leaks (crankcase vacuum control can allow excess air from the crankcase to flow into the intake manifold, for instance, if vacuum line from brake booster to vacuum pump is leaking).

US: MIL ON

US only

0x2D29

11561

Differential-pressure sensor, intake manifold: plausibility

Differential Pressure Sensor

Pressure

Differential pressure sensor monitor 6% <. Relative charge factor <120% - 20° <. Induction air temperature sensor < 85°C 560 RPM. Engine speed < 7200 RPM. Time after start > 30 sec. regardless of EVAP active/inactive

0.2 sec.

Terminal 15, engine on

Voltage in onboard electrical system >= 10 V

Coolant temperature > -10°C

4.4 sec.

none

MAX fault (intake manifold pressure (absolute) too high) - Induction system/crankcase vacuum leak - Incorrect throttle plate angle - Vacuum sensor malfunction

Visual inspection of vacuum sensor plug contacts
Check wiring between vacuum sensor and DME
Check induction system/crankcase for leaks (crankcase vacuum control can allow excess air from the crankcase to flow into the intake manifold, for instance, if vacuum line from brake booster to vacuum pump is leaking)

US: MIL ON

US only

0x2D07

11527

Throttle

Throttle Position Sensor

A and B

Engine must be running

none

Terminal 15 ON

Voltage in onboard electrical system >= 10 V

none

250 ms

none

Contact resistance in input wires or plug-in contacts at throttle valve, electrical problem with throttle valve

Check: The sum of throttle valve voltages must equal 5 V
Perform electrical check on wiring from DME to throttle valve
Visual inspection of plug-in contacts (at component, wiring harness and DME)
Replace component

MIL activation control. With previous fault, switches to MIN/MAX selection for throttle valve aperture definition

Throttle valve voltages deviate by more than 0.6 V. Important: This malfunction can lead to an HFM fault; when throttle valve and HFM faults appear simultaneously there is no immediate need to proceed to an examination of the HFM.

0x2F09

12041

Intake air temperature sensor, plausibility

Intake Air Temperature Sensor

1 Temperature

Engine must be running, compliance with specified diagnosis conditions is mandatory (see Time conditions)

30 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

When the engine is started the ambient temperature must exceed -7.5°C and be less than 35.3°C

Drive over 40 km/h for 120 sec. + debounce time of 30 sec.

none

Data readings from sensor too high: Sticking sensor, sensor manipulation

Check sensor data
Carry out electrical check on sensor wire and power supply wires
Visual inspection of sensor
Replace sensor

MIL ON in US versions only

none

0x2F09

12041

Intake air temperature sensor, plausibility

Intake Air Temperature Sensor

1 Temperature

Engine must be running, compliance with specified diagnosis conditions is mandatory (see Time conditions)

30 sec.

Terminal 15 ON

Voltage in onboard electrical system > 10 V

When the engine is started the ambient temperature must exceed -7.5°C and be less than 35.3°C.

Drive over 40 km/h for 120 sec. + debounce time of 30 sec.

none

Data readings from sensor are too low: Sticking sensor, sensor manipulation.

Check sensor data
Check outside temperature data
Perform electrical check on sensor and supply wires
Visual inspection of sensor
Replace sensor

MIL ON in US versions only

ATTENTION: This fault can also be triggered by an implausibly high figure for outside temperature. Therefore: Always check outside temperature to ensure that it is plausible.

0x2D2A

11562

Differential-pressure sensor, intake manifold: adaptation

Differential Pressure Sensor

Offset

Throttle valve open

1 sec.

in control module shutdown period

none

3 sec.

none

Implausible signal from differential pressure sensor

Determine whether throttle valve operation is trouble-free
Replace sensor

US: MIL ON ECE: No MIL

none

0x2C3D

11325

Oxygen sensor before catalytic converter, line fault

Oxygen Sensor, Front

Negative/Positive Current

Not supported

none

0x2C3D

11325

Oxygen sensor before catalytic converter, line fault

Oxygen Sensor, Front

Negative/Positive Current

O2 sensor wiring monitor O2 sensor signal freezes. No fault memories. Drive at 50 - 80 km/h at moderate engine speed.

Voltage seizes at 2 V (Lambda = 1) OR voltage < 2.1 V with overrun injection deactivation active

Terminal 15, engine on

none

Engine at operating temperature

approximately 9s with overrun injection deactivation active

O2 sensors reversed

none

Sensor inactive. Wire VG or IP is open. Catalyst is plugged (rich exhaust at O2 sensor in overrun cut-off); oil or gasoline in the exhaust gases during operation in overrun cut-off phase.

Visual inspection of wires, DME plug and O2 sensor for damage
Inspect wires
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 1 (water or corrosion in plug?) => Repeatedly remove the plug and then reconnect it FIRMLY)
Check catalytic converter (is FSD lean fault entered for the other bank?)
Piston rings, injectors, positive crankcase ventilation OK? FSD fault? Then continue there!
Replace O2 sensor
Replace DME

MIL ON

none

0x2C3E

11326

Oxygen sensor before catalytic converter 2, line fault

Oxygen Sensor, Front

Negative/Positive Current

Not supported

none

0x2C3E

11326

Oxygen sensor before catalytic converter 2, line fault

Oxygen Sensor, Front

Negative/Positive Current

O2 sensor wiring monitor O2 sensor signal freezes. No fault memories. Drive at 50 - 80 km/h at moderate engine speed.

Voltage seizes at 2 V (Lambda = 1) or voltage < 2.1 V with overrun injection deactivation active

Terminal 15, engine on

none

Engine at operating temperature

approximately 9s with overrun injection deactivation active

O2 sensors reversed

none

Sensor inactive Wire VG or IP is open Catalyst is plugged (rich exhaust at O2 sensor in overrun cut-off); oil or gasoline in the exhaust gases during operation in overrun cut-off phase

Visual inspection of wires, DME plug and O2 sensor for damage
Inspect wires
Check plug-in connections DME <=> Wiring harness <=> Upstream (pre-cat) O2 sensor for Bank 1 (water or corrosion in plug?) => Repeatedly remove the plug and then reconnect it FIRMLY)
Check catalytic converter (is FSD lean fault entered for the other bank?)
Piston rings, injectors, positive crankcase ventilation OK? FSD fault? Then continue there!
Replace O2 sensor
Replace DME

MIL ON

none

0x2C6D

11373

Oxygen sensor behind catalytic converter, aging.

Oxygen Sensor, Rear

Dynamic Test

O2 sensor aging test. No secondary air injection, 0 < Speed < 150 km/h

Switching time counter > 1.5 (sensor transition from rich to lean too slow)

Terminal 15, engine on

none

Coolant temperature > 50°C

Approximately 5 sec. after start of overrun cut-off

none

Excessive lag in O2 signal change from rich to lean when overrun injection deactivation assumes operation; excessive sensor lag owing to cooling; sensor too slow owing to aging.

Was the temperature drop caused by external factors (driving into snow pile, ice on O2 sensor)? Thaw sensor, clear all fault memory, continue driving.

Check O2 sensor heater: Contact resistance on plugs and in wiring is excessive (DME-wiring harness-sensor)
Check wiring
Check O2 sensor plug (water or corrosion in the plug? Repeatedly disconnect the plug and then re-insert it FIRMLY)
Replace plug and/or wire as indicated
Replace the affected downstream (post-cat) O2 sensor

MIL ON

none

0x2C6E

11374

Oxygen sensor behind catalytic converter 2, aging

Oxygen Sensor, Rear

Dynamic Test

O2 sensor aging test. No secondary air injection, 0 < Speed < 150 km/h

Switching time counter > 1.5 (sensor transition from rich to lean too slow)

Terminal 15, engine on

none

Coolant temperature > 50°C

Approximately 5 sec. after start of overrun cut-off

none

Excessive lag in O2 signal change from rich to lean when overrun injection deactivation assumes operation; excessive sensor lag owing to cooling; sensor too slow owing to aging.

Was the temperature drop caused by external factors (driving into snow pile, ice on O2 sensor)? Thaw sensor, clear all fault memory, continue driving!

Check O2 sensor heater: Contact resistance on plugs and in wiring is excessive (DME-wiring harness-sensor)
Check wiring
Check O2 sensor plug (water or corrosion in the plug? Repeatedly disconnect the plug and then re-insert it FIRMLY)
Replace plug and/or wire as indicated
Replace the affected downstream (post-cat) O2 sensor

MIL ON

none

0x2C7E

11390

Oxygen sensor behind catalytic converter, trim control

Fuel System

Post Catalyst via Oxygen Sensor

O2 sensor trim control. No fault memories. Drive at 50 - 80 km/h and at moderate engine speed.

Excessive trim controller deviation; behind catalytic converter sensor voltage outside range around trim controller specification point with trim controller active (approximately < 0.2 V or approximately > 0.9 V)

Terminal 15, engine on

none

Engine at operating temperature

approximately 4 minutes

none

Defective wiring. Exhaust system leak. Pre-cat or downstream (post-cat) O2 sensor defective.

This fault automatically triggers an active test (secondary fault stored in the control module's fault memory!).

Read out results of active test (are other fault codes still stored in the fault memory)? => Then continue at this point!)
Initiate system test for reversed O2 sensors. Follow instructions for system test.
If the system test fails to produce a result then
Visual inspection of wiring and plugs
Electrical check of wiring
Replace wiring or plugs as indicated
Check exhaust system forward of downstream (post-cat) O2 sensor for leaks
Replace downstream (post-cat) O2 sensor

MIL ON

none

0x2C7E

11390

Oxygen sensor behind catalytic converter, trim control

Fuel System

Post Catalyst via Oxygen Sensor

none

0x2C7F

11391

Oxygen sensor behind catalytic converter 2, trim control

Fuel System

Post Catalyst via Oxygen Sensor

O2 sensor trim control. No fault memories. Drive at 50 - 80 km/h and at moderate engine speed.

Terminal 15, engine on

none

Engine at operating temperature

approximately 4 minutes

none

Defective wiring. Exhaust system leak. Pre-cat or downstream (post-cat) O2 sensor defective.

This fault automatically triggers an active test (secondary fault stored in the control module's fault memory!).

Read out results of active test (are other fault codes still stored in the fault memory)? => Then continue at this point!)
Initiate system test for reversed O2 sensors. Follow instructions for system test.
If the system test fails to produce a result then
Visual inspection of wiring and plugs
Electrical check of wiring
Replace wiring or plugs as indicated
Check exhaust system forward of downstream (post-cat) O2 sensor for leaks
Replace downstream (post-cat) O2 sensor

MIL ON

none

0x2C7F

11391

Oxygen sensor behind catalytic converter 2, trim control

Fuel System

Post Catalyst via Oxygen Sensor

none

0x2D16

11542

Air-mass sensor, signal

No Info

Engine start completed

0.2 sec.

Terminal 15

OBD1 conditions met (voltage between 10 V and 16 V)

none

Sensor's self-diagnosis reports fault or range violation with period duration exceeding upper limit.

Visual inspection of plug-in contacts (at both component and DME ends)
Measure sensor wire, power supply and ground (possible intermittent contact!)
Replace sensor

none

If the ""air mass period duration"" displayed in the environmental data is > 4500 us this is an fault generated by the sensor's own self-diagnosis utility (sensor reports active problem). The response should be to replace the sensor. If the ""air mass period duration"" is < 4500 us, this is an upward range violation (period duration too high) that can be caused by defects in both the sensor and the wiring harness.

0x2D15

11541

Air-mass sensor, measurement range

Mass Air Flow

General

Engine start completed

0.2 sec.

none

OBD1 conditions met (voltage between 10 V and 16 V)

none

Range violation in frequency supplied by HFM, stimulation with frequency generator.

Check frequency of HFM
Check sensor and replace as indicated

none

0x2D0F

11535

Air-mass sensor, signal

Mass Air Flow Sensor

Signal

Engine start completed

0.2 sec.

Terminal 15 ON

OBD1 conditions met (voltage between 10 V and 16 V)

none

Sum fault

Frequency outside valid range, stimulation with frequency generator

Visual inspection of plug-in terminals (at components and DME)
Perform electrical check on sensor wire, power supply and ground
Replace sensor

MIL ON

ATTENTION: If the ground wire is open an HFM fault will appear together with an intake air temperature fault in the fault memory

0x2D0F

11535

Air-mass sensor, signal

Mass Air Flow Sensor

Signal

Data content defined for this fault

none

Data content defined for this fault

MIL ON

none

0x2D0F

11535

Air-mass sensor, signal

Mass Air Flow Sensor

Signal

Engine start completed

0.2 sec.

Terminal 15 ON

OBD1 conditions met (voltage between 10 V and 16 V)

none

Sum fault

Range violation, defective sensor or signal wire has fallen off

Visual inspection of plug-in contacts (at both component and DME ends)
Measure sensor wire, power supply and ground (possible intermittent contact!)
Replace sensor

MIL ON

Refer to fault 'Mass airflow sensor, Signal', Symptom 1

0x2D28

11560

Differential-pressure sensor, intake manifold: signal

Differential Pressure Sensor

Electrical

Monitor for differential pressure sensor. Engine start ended.

0.5 sec.

Terminal 15, engine on

none

Pin 5 - 33 shorted to positive or open circuit

Visual inspection of plug-in terminals (at components and DME)
Perform electrical check on sensor wire, power supply and ground
Replace sensor

US: MIL ON ECE: No MIL

none

0x2D28

11560

Differential-pressure sensor, intake manifold: signal

Differential Pressure Sensor

Electrical

Monitor for differential pressure sensor. Engine start ended

0.5 sec.

Terminal 15, engine on

none

Pin 5 - 33 shorted to ground

Visual inspection of plug-in terminals (at components and DME)
Perform electrical check on sensor wire, power supply and ground
Replace sensor

US: MIL ON ECE: No MIL

none

Self Diagnosis - Diagnostic Trouble Codes - DTC p0010 - DTC p1198 (n52) BMW Z4 E89

BMW MSV80

BMW Fault Code (hex)

BMW Fault Code (dez)

BMW Fault Code Description VS-Text

Component

Subcomponent

Monitoring criteria

Fault debouncing

Terminal conditions

Voltage conditions

Temperature conditions

Time conditions

System test

Signal information

Calculated value Y/N

Possible Fault Causes

Repair procedures (plant/service)

MIL illumination/CC message/emergency program

Remarks

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