DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-261A will be stored when the long-term trim must be adjusted to almost maximum in the lower part load area.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- low fuel pressure
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-261A will be stored when the long-term trim must be adjusted to almost maximum in the lower part load area.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- low fuel pressure
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-262A will be stored when the long-term trim must be adjusted almost to maximum in the idle range.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-262A will be stored when the long-term trim must be adjusted almost to maximum in the idle range.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. Diagnostic Trouble Code (DTC) ECM-268A will be stored if the short-term fuel trim deviates too much from its central position (value) when the long-term fuel trim diagnostics are activated.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- low fuel pressure
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-270A will be stored when the long-term trim must be adjusted almost to maximum in the upper part of the load area.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- low fuel pressure
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-271A will be stored when the long-term trim must be adjusted to almost maximum in the lower part load area.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- low fuel pressure
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
Scheme 99
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
After the engine is started, the engine control module (ECM) calculates the theoretical engine coolant temperature (ECT) based on factors such as time since start, engine speed (RPM) and load. The diagnostic trouble code (DTC) is stored if the signal from the engine coolant temperature (ECT) sensor is static and does not correspond to the calculated temperature.
The diagnostic trouble code (DTC) is stored together with another diagnostic trouble code (DTC) for the engine coolant temperature (ECT) sensor.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance or oxidation in the connectors
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
Condition
Scheme 100
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
After the engine is started, the engine control module (ECM) calculates the theoretical engine coolant temperature (ECT) based on factors such as time since start, engine speed (RPM) and load. The diagnostic trouble code (DTC) is stored if the signal from the engine coolant temperature (ECT) sensor is static and does not correspond to the calculated temperature.
The diagnostic trouble code (DTC) is stored together with another diagnostic trouble code (DTC) for the engine coolant temperature (ECT) sensor.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance or oxidation in the connectors
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture when idling at both the lower and upper part-load range. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. Diagnostic trouble code (DTC) ECM-272A will be stored when the long-term trim must be adjusted almost to maximum in the idle range.
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- defective heated oxygen sensor (HO2S)
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S)
Fault symptom[s]
- none
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
After the engine is started, the engine control module (ECM) calculates the theoretical engine coolant temperature (ECT) based on factors such as time since start, engine speed (RPM) and load. The diagnostic trouble code (DTC) is stored if the signal from the engine coolant temperature (ECT) sensor is lower than the calculated temperature.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance or oxidation in the connectors
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
After the engine is started, the engine control module (ECM) calculates the theoretical engine coolant temperature (ECT) based on factors such as time since start, engine speed (RPM) and load. The diagnostic trouble code (DTC) is stored if the signal from the engine coolant temperature (ECT) sensor is lower than the calculated temperature.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance or oxidation in the connectors
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-273C
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
A diagnostic trouble code (DTC) is stored if the engine control module (ECM) receives a signal from the engine coolant temperature (ECT) sensor corresponding to a temperature that is higher than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Initial boost pressure
- The engine coolant temperature (ECT) is calculated based on a model. Three-way catalytic converter (TWC) heating and fuel trim at start (starting trim), idle diagnostic and misfire diagnostic are disabled
- The engine cooling fan (FC) runs at a predefined speed.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
A diagnostic trouble code (DTC) is stored if the engine control module (ECM) receives a signal from the engine coolant temperature (ECT) sensor corresponding to a temperature that is higher than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Initial boost pressure
- The engine coolant temperature (ECT) is calculated based on a model. Three-way catalytic converter (TWC) heating and fuel trim at start (starting trim), idle diagnostic and misfire diagnostic are disabled
- The engine cooling fan (FC) runs at a predefined speed.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
A diagnostic trouble code (DTC) is stored if the engine control module (ECM) receives a signal from the engine coolant temperature (ECT) sensor corresponding to a temperature that is higher than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Initial boost pressure
- The engine coolant temperature (ECT) is calculated based on a model. Three-way catalytic converter (TWC) heating and fuel trim at start (starting trim), idle diagnostic and misfire diagnostic are disabled
- The engine cooling fan (FC) runs at a predefined speed.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-273D
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
A diagnostic trouble code (DTC) is stored if the engine control module (ECM) receives a signal from the engine coolant temperature (ECT) sensor corresponding to a temperature that is lower than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Initial boost pressure
- The engine coolant temperature (ECT) is calculated based on a model. Three-way catalytic converter (TWC) heating and fuel trim at start (starting trim), idle diagnostic and misfire diagnostic are disabled
- The engine cooling fan (FC) runs at a predefined speed.
Possible Source
- Contact resistance and oxidation in the terminals
- Open-circuit in the signal cable
- Open-circuit in the signal ground cable
- Short-circuit to supply voltage in the signal cable
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
Condition
The engine control module (ECM) checks the signal for engine coolant temperature (ECT).
A diagnostic trouble code (DTC) is stored if the engine control module (ECM) receives a signal from the engine coolant temperature (ECT) sensor corresponding to a temperature that is higher than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Initial boost pressure
- The engine coolant temperature (ECT) is calculated based on a model. Three-way catalytic converter (TWC) heating and fuel trim at start (starting trim), idle diagnostic and misfire diagnostic are disabled
- The engine cooling fan (FC) runs at a predefined speed.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged temperature sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is difficult to start.
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-274C
Condition
Scheme 101
Engine Control Module (ECM) checks the signal for engine temperature. If the engine temperature (signal) exceeds a certain limit, the control module checks current operating condition and compares to a calculated engine temperature. Calculations are based on, among other things, speed and load. If the signal from the engine temperature sensor matches a temperature that is higher than a certain limit value and is not reduced within a certain time, the control module interprets this as a malfunction and the diagnostic trouble code (DTC) is generated.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- The engine coolant temperature (ECT) is calculated based on a model.
Possible Source
- Damaged engine coolant temperature (ECT) sensor.
- Contact resistance or oxidation in the terminals.
- Insufficient coolant in cooling system.
- Damaged thermostat.
- Clogged radiator.
Fault symptom[s]
- Malfunction indicator light (MIL), on
- Engine is difficult to start
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-275C
Condition
Engine Control Module (ECM) checks the signal for engine temperature at start. This is done by the control module saving the values from inlet, fuel and engine temperature sensors at the moment of start. Then the control module compares the values. If the signal from the engine temperature sensor matches a temperature that exceeds a certain limit in relation to the other, the control module interprets this as a malfunction and the diagnostic trouble code (DTC) is generated.
The diagnostic trouble code (DTC) can be diagnosed after approx. 10 minutes with the engine running.
Substitute Value
- The engine coolant temperature (ECT) is calculated based on a model.
Possible Source
- Damaged engine coolant temperature (ECT) sensor.
- Contact resistance or oxidation in the terminals.
Fault symptom[s]
- Malfunction indicator light (MIL), on
- Engine is difficult to start
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-275D
Condition
Engine Control Module (ECM) checks the signal for engine temperature at start. This is done by the control module saving the values from inlet, fuel and engine temperature sensors at the moment of start. Then the control module compares the values. If the signal from the engine temperature sensor matches a temperature that is below a certain limit in relation to the other, the control module interprets this as a malfunction and the diagnostic trouble code (DTC) is generated.
The diagnostic trouble code (DTC) can be diagnosed after approx. 10 minutes with the engine running.
Substitute Value
- The engine coolant temperature (ECT) is calculated based on a model.
Possible Source
- Damaged engine coolant temperature (ECT) sensor.
- Contact resistance or oxidation in the terminals.
Fault symptom[s]
- Malfunction indicator light (MIL), on
- Engine is difficult to start
Condition
The control module receives information from the heated oxygen sensor (HO2S) about the fuel / air mixture. If the fuel / air mixture deviates from lambda=1, the short-term fuel trim will compensate for this by adjusting the injection time so that lambda=1 is achieved. Diagnostic trouble code (DTC) ECM-278A will be stored if the short-term fuel trim deviates (when long-term fuel trim diagnostics are activated) too much from the center position (value) for bank 2 (cylinders 4, 5 and 6).
Diagnostic trouble code (DTC) ECM-268A is stored for bank 1 (cylinders 1, 2 and 3).
Substitute Value
none
Possible Source
Upper limit
- intake air leakage
- exhaust system air leakage
- low fuel pressure
- defective heated oxygen sensor (HO2S).
Lower limit
- intake air leakage
- high fuel pressure
- leaking injectors
- defective mass air flow (MAF) sensor
- contaminated engine oil
- oil level too high
- defective heated oxygen sensor (HO2S).
Fault symptom[s]
- none.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2800
Condition
Scheme 102
The engine control module (ECM) checks the signal from the fuel pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the fuel pressure sensor is within the normal signal range of the sensor but that the signal is below a calculated desired value for the fuel pressure.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged fuel pressure sensor.
Fault symptom[s]
- Driving/Poor performance/lacks power
- Driving/Engine stalls/Unsure when/at all times
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2800
Condition
Scheme 103
Probe monitoring begins after probe preheating diagnostics are complete. Diagnostic trouble code (DTC) ECM-280A is stored if there is a fault in the front heated oxygen sensor (HO2S) or its wiring causing the signal to deviate from its permitted range
The control module registers four different types of fault
- Signal too high The control module compares the front and rear adaptation values. A diagnostic trouble code (DTC) is stored when the values deviate by more than 3%. NOTE: The fault may be in the front or rear heated oxygen sensor (HO2S) circuit. the control module registers that the signal from the front probe is above 4.8 V for too long the signal from the front probe does not deviate from lambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
- Signal too low The control module monitors the aging of the probe by checking its dynamics when switching between lean and rich mixtures. The diagnostic trouble code (DTC) is stored if the control module registers that the probe is operating too slowly. the control module registers that the signal from the front probe is above 4.8 V for too long the signal from the front probe does not deviate from lambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
- Signal missing The control module monitors cross-induction from the probe preheating. Diagnostic trouble code (DTC) is stored when cross induction exceeds the permitted value. the control module registers that the signal from the front probe is above 4.8 V for too long the signal from the front probe does not deviate from lambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
- Faulty signal A diagnostic trouble code (DTC) stored when: the control module registers that the signal from the front probe is above 4.8 V for too long the signal from the front probe does not deviate from lambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
Substitute Value
- The rear heated oxygen sensor (HO2S) control is disabled
- Three-way catalytic converter (TWC) diagnostic is disabled
Possible Source
Signal too high
- air leakage in the exhaust system
- short-circuit to power supply or ground in the signal cable (+) or supply cable for pump current
- defective heated oxygen sensor (HO2S)
Signal too low
- the cable for calibration current and the cable for pump current are short-circuited to each other
- open-circuit in signal cable (-)
- open-circuit in cable for calibration current
- defective heated oxygen sensor (HO2S).
Signal missing
- signal cable (+) and signal cable (-) short-circuited to each other
- one of the cables for heated oxygen sensor (HO2S) preheating is short-circuited to the probe's other wiring
- defective heated oxygen sensor (HO2S).
Faulty signal
- short-circuit to supply voltage or ground in signal cable (+)
- short-circuit to supply voltage or ground in signal cable (-)
- short-circuit to supply voltage or ground in pump current cable
- short-circuit to supply voltage or ground in calibration current cable
- open-circuit in signal cable (+)
- defective heated oxygen sensor (HO2S).
Fault symptom[s]
- malfunction indicator lamp (MIL) lit.
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-280B
Condition
The engine control module (ECM) checks the signal from the fuel pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the fuel pressure sensor is within the normal signal range of the sensor but that the signal is below a calculated desired value for the fuel pressure.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged fuel pressure sensor.
Fault symptom[s]
- Driving/Poor performance/lacks power
- Driving/Engine stalls/Unsure when/at all times
Condition
The engine control module (ECM) checks the signal from the fuel pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the fuel pressure sensor is within the normal signal range of the sensor but that the signal is below a calculated desired value for the fuel pressure.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged fuel pressure sensor.
Fault symptom[s]
- Driving/Poor performance/lacks power
- Driving/Engine stalls/Unsure when/at all times
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-280B
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-280C
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the fuel pressure sensor is too high.
The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- None.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged temperature sensor.
Fault symptom[s]
- None.
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-280C
Condition
Diagnostic trouble code (DTC) ECM-280C is stored if the engine control module (ECM) detects that both front heated oxygen sensors (HO2S) bank 1 and 2 have been switched (mounted in the incorrect bank of cylinders). The diagnostic trouble codes (DTCs) are diagnosed when the engine has been idling for 10 minutes
Substitute Value
- Long-term fuel trim is switched off
- Three-way catalytic converter (TWC) diagnostics are disabled.
Possible Source
Faulty signal
- Front heated oxygen sensors (HO2S) are mounted in the incorrect cylinder banks
- Fuel injection system leakage
- Both the front heated oxygen sensors (HO2S) are defective.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-280D
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the signal from the fuel pressure sensor is too low.
The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- None.
Possible Source
- Contact resistance or oxidation in the terminals
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Open-circuit in the signal ground cable
- Damaged temperature sensor.
Fault symptom[s]
- None.
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-280D
Condition
The control module controls preheating by pulsing the current to the PTC-element. Pulse lengths are dependent on heated oxygen sensor (H02S) temperature. Diagnostic trouble code (DTC) ECM-2810 is stored if the control module registers that the signal is constantly 2.5 V, higher than 3.5 V at current pulse or lower than 2.3 V at no pulse.
Diagnostic trouble code (DTC) ECM-2810 is stored if the control module registers that heated oxygen sensor pre-heating does not function within 17 seconds of dew (condensation) point in the exhaust system being reached.
Substitute Value
- fuel trim shut off.
Possible Source
Signal too high
- short-circuit to supply voltage in the signal cable
- defective heated oxygen sensor (HO2S).
Signal too low
- short-circuit to ground in the signal cable
- defective heated oxygen sensor (HO2S).
Signal missing
- contact resistance and oxidation
- open-circuit in power supply from system relay.
Faulty signal
- defective heated oxygen sensor (HO2S).
Fault symptom[s]
- MIL-lamp lights.
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-281C
Condition
Scheme 104
Note. If the diagnostic trouble code is generated, it is an indication that the fuel pressure has exceeded 800 kPa, there is a risk of fuel leakage.
The engine control module (ECM) controls the fuel pressure via the fuel pump (FP) control module using a pulse width modulation (PWM) signal. The fuel pump (FP) control module then controls the fuel pump (FP) depending on the pressure requested by the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the actual pressure (measured pressure from the fuel pressure sensor) rises too high in comparison with the requested pressure (target pressure) during a certain time frame.
The diagnostic trouble code (DTC) can be diagnosed when the engine is idling.
Substitute Value
- Predefined value used.
Possible Source
- Damaged fuel pump control module.
- Damaged fuel pump unit.
- The cable for voltage supply to the fuel pump is short-circuited to supply voltage.
- Damaged fuel pressure sensor
Fault symptom[s]
- Message in information display
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- The engine stops.
Scheme 105
Note. If the diagnostic trouble code is generated, it is an indication that the fuel pressure has exceeded 800 kPa, there is a risk of fuel leakage. Therefore, it may be good to perform a check of the fuel system.
- Start the engine. Allow the engine to idle.
Check the fuel system for leaks.
Remedy as necessary.
- Continue Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S01445336882012060500000)
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2900
Condition
Scheme 106
The engine control module (ECM) controls the fuel pressure via the fuel pump (FP) control module using a pulse width modulation (PWM) signal. The fuel pump (FP) control module then controls the fuel pump (FP) depending on the pressure requested by the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the control capacity of the engine control module (ECM) for fuel pressure reaches the highest or lowest value and the desired fuel pressure (target value) is not achieved.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Leakage in the fuel lines
- Damaged fuel pressure sensor
- Damaged fuel pump
- Damaged fuel pump control module.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- The engine stops.
- Starting/Engine does not start/Engine turns
CHECKING THE DIAGNOSTIC TROUBLE CODES (DTCS)
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S40149668332012060500000)
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2900
Condition
Scheme 107
Probe monitoring begins after probe preheating diagnostics are complete. Diagnostic trouble code (DTC) ECM-290A is stored if there is a fault in the front heated oxygen sensor (HO2S) or its wiring causing the signal to deviate from its permitted range.
The control module registers four different types of fault
- Signal too high The control module compares the front and rear adaptation values. A diagnostic trouble code (DTC) is stored when the values deviate by more than 3%. NOTE: The fault may be in the front or rear heated oxygen sensor (HO2S) circuit. the control module registers that the signal from the front probe is above 4.8 V for too long - the signal from the front probe does not deviate fromlambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
- Signal too low The control module monitors the aging of the probe by checking its dynamics when switching between lean and rich mixtures. The diagnostic trouble code (DTC) is stored if the control module registers that the probe is operating too slowly. the control module registers that the signal from the front probe is above 4.8 V for too long - the signal from the front probe does not deviate fromlambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
- Signal missing The control module monitors cross-induction from the probe preheating. Diagnostic trouble code (DTC) is stored when cross induction exceeds the permitted value. the control module registers that the signal from the front probe is above 4.8 V for too long - the signal from the front probe does not deviate fromlambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
- Faulty signal A diagnostic trouble code (DTC) stored when: the control module registers that the signal from the front probe is above 4.8 V for too long - the signal from the front probe does not deviate fromlambda= 1 the signal from the front probe is showing a lean fuel mixture while the signal from the rear probe is showing a rich mixture the signal from the front probe is showing a rich fuel mixture while the signal from the rear probe is showing a lean mixture.
Substitute Value
- The rear heated oxygen sensor (HO2S) control is disabled
- Three-way catalytic converter (TWC) diagnostic is disabled
Possible Source
Signal too high
- air leakage in the exhaust system
- short-circuit to power supply or ground in the signal cable (+) or supply cable for pump current
- defective heated oxygen sensor (HO2S)
Signal too low
- the cable for calibration current and the cable for pump current are short-circuited to each other
- open-circuit in signal cable (-)
- open-circuit in cable for calibration current
- defective heated oxygen sensor (HO2S).
Signal missing
- Signal cable (+) and signal cable (-) short-circuited to each other
- one of the cables for heated oxygen sensor (HO2S) preheating is short-circuited to the probe's other wiring
- defective heated oxygen sensor (HO2S).
Faulty signal
- short-circuit to supply voltage or ground in signal cable (+)
- short-circuit to supply voltage or ground in signal cable (-)
- short-circuit to supply voltage or ground in pump current cable
- short-circuit to supply voltage or ground in calibration current cable
- open-circuit in signal cable (+)
- defective heated oxygen sensor (HO2S).
Fault symptom[s]
- malfunction indicator lamp (MIL) lit.
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-290B
Condition
The engine control module (ECM) controls the fuel pressure via the fuel pump (FP) control module using a pulse width modulation (PWM) signal. The fuel pump (FP) control module then controls the fuel pump (FP) depending on the pressure requested by the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the actual pressure (measured pressure from the fuel pressure sensor) pulses too much.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Air in the fuel lines
- Blocked fuel lines
- Damaged fuel pressure sensor
- Damaged fuel pump
- Damaged fuel pump control module.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- The engine stops.
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S10451528212012060500000)
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S22650974002012060500000)
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-290B
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S17872735552012060500000)
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S01930384122012060500000)
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-290C
Condition
The engine control module (ECM) controls the fuel pressure via the fuel pump (FP) control module using a pulse width modulation (PWM) signal. The fuel pump (FP) control module then controls the fuel pump (FP) depending on the pressure requested by the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the actual pressure (measured pressure from the fuel pressure sensor) rises too high in comparison with the requested pressure (target pressure) during a certain time frame.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Damaged fuel pressure sensor
- Damaged fuel pump control module.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- The engine stops.
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S02937230302012060500000)
see DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-290C
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S33006293152012060500000)
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-290D
Condition
The engine control module (ECM) controls the fuel pressure via the fuel pump (FP) control module using a pulse width modulation (PWM) signal. The fuel pump (FP) control module then controls the fuel pump (FP) depending on the pressure requested by the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the actual pressure (measured pressure from the fuel pressure sensor) is too low in comparison with the requested pressure (target pressure) during a certain time frame.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Leakage at the fuel lines
- Damaged fuel pressure sensor
- Damaged fuel pump
- Damaged fuel pump control module.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Deterioration in performance
- The engine stops.
- Starting/Engine does not start/Engine turns
Check if there are diagnostic trouble codes stored for fuel pressure sensor or ambient pressure sensor, in that case troubleshoot and fix these first.
Do you want to continue with this procedure?
- YES Refer to «CHECKING THE FUEL PRESSURE SENSOR»(ref-476757-S33801113232012060500000)
- NO OKAY: Troubleshooting has been completed.