DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1000
Condition
Scheme 1
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers an internal fault indicating that the signal from the internal atmospheric pressure sensor is incorrect.
The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for at least 15 seconds.
Substitute Value
If the pressure sensor to the intake manifold is OK, a filtered value from the sensor is used. Otherwise the value is set at 1, 013 hPa (corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
Malfunction indicator lamp (MIL) lit.
Scheme 2
Scheme 3
- Ignition on, wait at least 15 seconds to carry out the diagnostic. Read off the diagnostic trouble code (DTC) status. Check whether the fault is permanent or intermittent. Read off the diagnostic trouble code (DTC) fault status when the diagnostic status is "Completed". The fault is permanent if the fault status is "Fault found". The fault is intermittent if the fault status is "No fault detected".
- Continue Refer to «REPLACING THE COMPONENT»(ref-466646-S34816566442012042500000)
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-100A
Condition
Scheme 4
The engine control module (ECM) compares the filtered signal from the pressure sensor to the inlet manifold with the signal from the atmospheric pressure sensor in the engine control module (ECM). The diagnostic trouble code is generated if the it registers that the deviation is greater than 70 hPa.
The diagnostic trouble code can be diagnosed 15 seconds after the ignition is switched.
Substitute Value
If the pressure sensor for the intake manifold is OK, a filtered value from the sensor is used. Otherwise the value is set at 1013 hPa (corresponding to sea level).
Possible Source
- Damaged manifold absolute pressure (MAP) sensor.
- Damaged engine control module (ECM).
Fault symptom[s]
Malfunction indicator light (MIL), on
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1100
Condition
Scheme 5
A fault message is transmitted to the engine control module (ECM) and the diagnostic trouble code (DTC) is stored if a fault in the outside temperature sensor is detected by the central electronic module (CEM).
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- This temperature is used if no fault has been detected on the intake temperature sensor
- The constant 20 °C is used if a fault has also been detected on the intake temperature sensor.
Possible Source
- Fault trace the central electronic module (CEM).
Fault symptom[s]
- None.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-110A
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM). The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the value from the outside temperature sensor deviates too much from the values for intake and engine coolant temperature (ECT) after the engine has been allowed to cool from operating temperature for at least 8 hours.
The diagnostic trouble code (DTC) can be diagnosed at ignition after the engine has been allowed to cool for at least 8 hours.
Substitute Value
- This temperature is used if no fault has been detected on the intake temperature sensor
- The constant 20 °C is used if a fault has also been detected on the intake temperature sensor.
Possible Source
- Damaged outside temperature sensor.
Fault symptom[s]
- None.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-112C
Condition
The engine control module (ECM) checks the signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) is stored if the signal from the internal atmospheric pressure sensor is higher than a certain value for a certain amount of time. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- 1013 hPa (atmospheric pressure corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-112C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-112D
Condition
The engine control module (ECM) checks the signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) is stored if the signal from the internal atmospheric pressure sensor is lower than a certain value for a certain amount of time. The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- 1013 hPa (atmospheric pressure corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-112D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1130
Condition
The engine control module (ECM) checks the signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a faulty signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for at least 20 seconds.
Substitute Value
- 1013 hPa (atmospheric pressure corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1130
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-113B
Condition
The engine control module (ECM) checks the signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a faulty signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for at least 20 seconds.
Substitute Value
- 1013 hPa (atmospheric pressure corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-113B
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-113C
Condition
The engine control module (ECM) checks the signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a faulty signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for at least 20 seconds.
Substitute Value
- 1013 hPa (atmospheric pressure corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-113C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-113D
Condition
The engine control module (ECM) checks the signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a faulty signal from the internal atmospheric pressure sensor.
The diagnostic trouble code (DTC) can be diagnosed when the ignition has been on for at least 20 seconds.
Substitute Value
- 1013 hPa (atmospheric pressure corresponding to sea level).
Possible Source
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-113D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1200
Condition
Scheme 6
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to ground or supply voltage or an open-circuit in the intake air temperature (IAT) sensor.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- The value for the intake air temperature (IAT) is set at 30 °C.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Damaged intake air temperature (IAT) sensor (in the mass air flow (MAF) sensor).
Signal too low
- Short-circuit to ground in the signal cable
- Damaged intake air temperature (IAT) sensor (in the mass air flow (MAF) sensor).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1200
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-120A
Condition
The engine control module (ECM) checks the signal from the intake air temperature (IAT) sensor in the intake manifold. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the value from the intake air temperature (IAT) sensor deviates too much from the value of the engine coolant temperature (ECT) sensor after the engine has been switched off for an extended period.
The diagnostic trouble code (DTC) is diagnosed once per operating cycle when the ignition is switched on, but only when the engine temperature has dropped by approximately 55 °C from operating temperature since the previous operating cycle.
Substitute Value
- The value for the intake air temperature (IAT) is set at 30 °C.
Possible Source
- Contact resistance in the connector
- Damaged intake air temperature (IAT) sensor (in the mass air flow (MAF) sensor).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-120C
Condition
Scheme 7
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is divided (/) by the measured value from the mass air flow (MAF) sensor (= correction value, mass air flow).
The diagnostic trouble code (DTC) is stored if the correction value deviates from 1 (higher than 1) i. e. the calculated air mass is higher than the measured air mass.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Air leakage in the intake system
- Blocked intake system
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-120C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-120D
Condition
The engine control module (ECM) checks the signal from the intake air temperature (IAT) sensor under two different driving conditions. First at a high air flow with vehicle speed, then at idle speed and a stationary vehicle.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the temperature difference at these two measurement points is implausibly similar.
Substitute Value
- The value for the intake air temperature (IAT) is set at 30 °C.
Possible Source
- Contact resistance in the connectors
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is divided (/) by the measured value from the mass air flow (MAF) sensor (= correction value, mass air flow).
The diagnostic trouble code (DTC) is stored if the correction value deviates from 1 (lower than 1) i. e. the calculated air mass is lower than the measured air mass.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance or oxidation in the mass air flow (MAF) connectors
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-120D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-122C
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is then compared with the measured value from the mass air flow (MAF) sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the value for the measured air mass is higher than the calculated value for air mass.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Calculated boost pressure
- Calculated air mass
- Rear heated oxygen sensor (HO2S) control shut off
- Misfire diagnostic shut off.
Possible Source
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the ground lead
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-122C
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-122C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-122D
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is then compared with the measured value from the mass air flow (MAF) sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the value for the measured air mass is lower than the calculated value for air mass.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Calculated boost pressure
- Calculated air mass
- Rear heated oxygen sensor (HO2S) control shut off
- Misfire diagnostic shut off.
Possible Source
- Air leakage in the intake system
- Contact resistance in the mass air flow (MAF) sensor connectors
- Short-circuit to ground in the signal cable
- Open-circuit in the signal cable
- Open-circuit in the power supply
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-122D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1230
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is then compared with the measured value from the mass air flow (MAF) sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the correction factor for the air mass (measured air mass/desired air mass value) is too low, while the long-term fuel trim is above or below a set value.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Calculated boost pressure
- Calculated air mass
- Rear heated oxygen sensor (HO2S) control shut off
- Misfire diagnostic shut off.
Possible Source
- Contact resistance or oxidation in the mass air flow (MAF) connectors
- Air leakage in the intake system
- Blocked intake system
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1230
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-123B
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is then compared with the measured value from the mass air flow (MAF) sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the correction factor for the air mass (measured air mass/desired air mass value) is too high, while the long-term fuel trim is above or below a set value.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Calculated boost pressure
- Calculated air mass
- Rear heated oxygen sensor (HO2S) control shut off
- Misfire diagnostic shut off.
Possible Source
- Contact resistance or oxidation in the mass air flow (MAF) connectors
- Air leakage in the intake system
- Blocked intake system
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-123B
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-123C
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is then compared with the measured value from the mass air flow (MAF) sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the correction factor for the air mass (measured air mass/desired air mass value) is too high, while the long-term fuel trim is above or below a set value.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Calculated boost pressure
- Calculated air mass
- Rear heated oxygen sensor (HO2S) control shut off
- Misfire diagnostic shut off.
Possible Source
- Contact resistance or oxidation in the mass air flow (MAF) connectors
- Air leakage in the intake system
- Blocked intake system
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-123C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-123D
Condition
The engine control module (ECM) calculates the anticipated mass air flow. The calculation is based on a number of parameters. The calculated value for mass air flow is then compared with the measured value from the mass air flow (MAF) sensor.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the correction factor for the air mass (measured air mass/desired air mass value) is too low, while the long-term fuel trim is above or below a set value.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Calculated boost pressure
- Calculated air mass
- Rear heated oxygen sensor (HO2S) control shut off
- Misfire diagnostic shut off.
Possible Source
- Contact resistance or oxidation in the mass air flow (MAF) connectors
- Air leakage in the intake system
- Blocked intake system
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-123D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-125C
Condition
The engine control module (ECM) checks the signal from the boost pressure sensor.
The diagnostic trouble code (DTC) is stored if the signal from the boost pressure sensor is higher than a certain value for a certain amount of time. The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- Limited boost pressure.
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 boost pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-125C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-125D
Condition
The engine control module (ECM) checks the signal from the boost pressure sensor.
The diagnostic trouble code (DTC) is stored if the signal from the boost pressure sensor is lower than a certain value for a certain amount of time. The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- Limited boost pressure.
Possible Source
- Contact resistance or oxidation in the terminals
- Short-circuit to ground in the signal cable
- Damaged boost pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-125D
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-125D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1260
Condition
The engine control module (ECM) checks the signal from the boost pressure sensor.
The diagnostic trouble code (DTC) is stored if the boost pressure sensor signal is within its normal range but is higher than a calculated value for the boost pressure.
The diagnostic trouble code (DTC) is diagnosed by the control module when the engine is running.
Substitute Value
- Limited boost pressure.
Possible Source
- Contact resistance or oxidation in the terminals
- Damaged boost pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1260
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126B
Condition
The engine control module (ECM) checks the signal from the boost pressure sensor.
The diagnostic trouble code (DTC) is stored if the boost pressure sensor signal is within its normal range but the signal is lower than a calculated value from the atmospheric pressure sensor.
The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- Limited boost pressure.
Possible Source
- Contact resistance or oxidation in the terminals
- Loose boost pressure sensor
- Damaged boost pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126B
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126C
Condition
The engine control module (ECM) checks the signal from the boost pressure sensor.
The diagnostic trouble code (DTC) is stored if the signal from the boost pressure sensor is higher than a certain value for a certain amount of time. The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- Limited boost pressure.
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 boost pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126C
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126D
Condition
The engine control module (ECM) checks the signal from the boost pressure sensor.
The diagnostic trouble code (DTC) is stored if the signal from the boost pressure sensor is lower than a certain value for a certain amount of time. The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- Limited boost pressure.
Possible Source
- Contact resistance or oxidation in the terminals
- Short-circuit to ground in the signal cable
- Damaged boost pressure sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126D
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-126D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1300
Condition
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to ground or supply voltage or an open-circuit in the mass air flow (MAF) sensor circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- A value calculated from engine speed (RPM) and pressure in the intake manifold is used.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Damaged mass air flow (MAF) sensor.
Signal too low
- Short-circuit to ground in the signal cable
- Open-circuit in the signal cable
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Jerky operation.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1300
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-130A
Condition
The engine control module (ECM) measures the air mass through the intake manifold using a sensor. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the sensor value deviates too much from a calculated value.
The diagnostic trouble code (DTC) can be diagnosed when
- Engine coolant temperature (ECT) is higher than or equal to 70 °C
- Engine speed (RPM) is approximately 700-5500 rpm
- Throttle angle is approximately 2-60°.
Substitute Value
- A value calculated from engine speed (RPM) and pressure in the intake manifold is used.
Possible Source
- Contact resistance in the connector
- Damaged fresh air intake hose
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Jerky operation.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-130B
Condition
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to ground or supply voltage or an open-circuit in the mass air flow (MAF) sensor circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- A value calculated from engine speed (RPM) and pressure in the intake manifold is used.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Damaged mass air flow (MAF) sensor.
Signal too low
- Short-circuit to ground in the signal cable
- Open-circuit in the signal cable
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Jerky operation.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-130B
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-131C
Condition
The engine control module (ECM) checks the signal for the intake air temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for the intake air temperature corresponds to a temperature that is higher than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Predefined value for intake air temperature
- Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.
Possible Source
- Contact resistance in the terminals
- Open-circuit in the signal cable
- Short-circuit to supply voltage in the signal cable
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-131C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-131D
Condition
The engine control module (ECM) checks the signal for the intake air temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for the intake air temperature corresponds to a temperature that is lower than a certain value.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Predefined value for intake air temperature
- Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.
Possible Source
- Short-circuit to ground in the signal cable
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-131D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1320
Condition
The engine control module (ECM) checks the signal for the intake air temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal does not follow a certain characteristics over a period of time.
The diagnostic trouble code (DTC) can be diagnosed under specific driving conditions.
Substitute Value
Predefined value for intake air temperature.
Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.
Possible Source
- Contact resistance or oxidation in the intake air temperature (IAT) sensor terminals
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1320
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-132C
Condition
The engine control module (ECM) checks the signal for the intake air temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal from the intake air temperature (IAT) sensor is higher than a calculated desired value.
The diagnostic trouble code (DTC) can be diagnosed under specific driving conditions.
Substitute Value
Predefined value for intake air temperature.
Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.
Possible Source
- Contact resistance or oxidation in the intake air temperature (IAT) sensor terminals
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-132C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-132D
Condition
The engine control module (ECM) checks the signal for the intake air temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the difference between the signal from the intake air temperature (IAT) sensor and the engine coolant temperature (ECT) sensor is more than 50 °C after the engine has been off for a certain amount of time.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
Predefined value for intake air temperature.
Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.
Possible Source
- Contact resistance or oxidation in the intake air temperature (IAT) sensor terminals
- Damaged intake air temperature (IAT) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-133C
Condition
Scheme 8
Engine Control Module (ECM) checks the signal for inlet 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 air 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
- Value from the outdoor temperature sensor is used.
Possible Source
- Damaged intake air temperature (IAT) sensor.
- Contact resistance or oxidation in the intake air temperature (IAT) sensor terminals.
Fault symptom[s]
- Malfunction indicator light (MIL), on
- Engine is difficult to start
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-133C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-133D
Condition
Engine Control Module (ECM) checks the signal for inlet 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 air 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
- Value from the outdoor temperature sensor is used.
Possible Source
- Damaged intake air temperature (IAT) sensor.
- Contact resistance or oxidation in the intake air temperature (IAT) sensor terminals.
Fault symptom[s]
- Malfunction indicator light (MIL), on
- Engine is difficult to start
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-133D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the central electronic module (CEM) has determined that the signal from the outside temperature sensor is incorrect.
The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Fault-trace the central electronic module (CEM).
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1400
Condition
Scheme 9
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to ground or supply voltage or an open-circuit in the manifold absolute pressure (MAP) sensor circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- The value from the mass air flow (MAF) sensor is used.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Damaged manifold absolute pressure (MAP) sensor.
- Damaged engine control module (ECM).
Signal too low
- Short-circuit to ground in the signal cable
- Damaged manifold absolute pressure (MAP) sensor.
- Damaged engine control module (ECM).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor accelerator pedal (AP) response.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1400
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-140A
Condition
The engine control module (ECM) measures the pressure in the intake manifold using a sensor. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the sensor value deviates too much from a calculated model.
The diagnostic trouble code (DTC) is diagnosed at a fixed engine speed above 1100 rpm and with the engine at operating temperature (>70 °C).
Substitute Value
- The value from the mass air flow (MAF) sensor is used.
Possible Source
- Contact resistance in the connector
- Defective hose connector
- Damaged manifold absolute pressure (MAP) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor accelerator pedal (AP) response.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-140B
Condition
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to ground or supply voltage or an open-circuit in the manifold absolute pressure (MAP) sensor circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- The value from the mass air flow (MAF) sensor is used.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Damaged manifold absolute pressure (MAP) sensor.
Signal too low
- Short-circuit to ground in the signal cable
- Damaged manifold absolute pressure (MAP) sensor.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor accelerator pedal (AP) response.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-140B
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the central electronic module (CEM) has determined that the signal from the outside temperature sensor is incorrect.
The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Fault-trace the central electronic module (CEM).
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-140C
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the engine control module (ECM) is determined to be above its normal range. The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Short-circuit to ground in the signal cable.
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-140D
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the engine control module (ECM) is determined to be below its normal range. The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable.
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1410
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the outside temperature sensor is within its normal range but deviates from the calculated temperature.
The diagnostic trouble code (DTC) can be diagnosed after 5 minutes driving at an engine speed above 1700 rpm and a speed above 50 km/h.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Damaged intake air temperature (IAT) sensor
- Fault-trace the central electronic module (CEM).
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-1410
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-141B
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the outside temperature sensor is within its normal range but deviates from the calculated temperature.
The diagnostic trouble code (DTC) can be diagnosed after 5 minutes driving at an engine speed above 1700 rpm and a speed above 50 km/h.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Damaged intake air temperature (IAT) sensor
- Fault-trace the central electronic module (CEM).
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-141B
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-142C
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the engine control module (ECM) is determined to be above its normal range. The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Short-circuit to ground in the signal cable.
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-142C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-142D
Condition
The central electronic module (CEM) transmits the signal from the outside temperature sensor via CAN to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored in the engine control module (ECM) if the signal from the engine control module (ECM) is determined to be below its normal range. The fault is diagnosed at ignition on or with the engine running.
Substitute Value
Value from the engine intake air temperature (IAT) sensor in the intake manifold is used.
Possible Source
- Damaged outside temperature sensor
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable.
Fault symptom[s]
- Starting/Engine hard to start/cranks slowly/Unsure when/at all times
- Gauges/Ambient temperature gauge not accurate/does not work
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-142D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-143C
Condition
Scheme 10
Engine Control Module (ECM) checks the signal for outdoor temperature at start. This is done by the control module saving the values from outdoor, inlet and engine temperature sensors at the moment of start. Then the control module compares the values. If the signal from the outdoor temperature sensor corresponds to a temperature that is higher than a certain limit in relation to the others, the control module interprets this as a malfunction and the diagnostic trouble code is generated.
The diagnostic trouble code (DTC) can be diagnosed after approx. 10 minutes with the engine running.
Substitute Value
- Outdoor temperature is calculated according to a model.
Possible Source
- Damaged outside temperature sensor.
- Contact resistance or oxidation in the terminals.
Fault symptom[s]
- Displays too low ambient temperature
- Displays too high outside temperature
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-143C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-143D
Condition
Engine Control Module (ECM) checks the signal for outdoor temperature at start. This is done by the control module saving the values from outdoor, inlet and engine temperature sensors at the moment of start. Then the control module compares the values. If the signal from the outdoor temperature sensor corresponds to a temperature that is lower than a certain limit in relation to the others, the control module interprets this as a malfunction and the diagnostic trouble code is generated.
The diagnostic trouble code (DTC) can be diagnosed after approx. 10 minutes with the engine running.
Substitute Value
- Outdoor temperature is calculated according to a model.
Possible Source
- Damaged outside temperature sensor.
- Contact resistance or oxidation in the terminals.
Fault symptom[s]
- Displays too low ambient temperature
- Displays too high outside temperature
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-143D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-160A
Condition
Scheme 11
The engine control module (ECM) checks the difference between the requested throttle position and the actual position.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the difference was sufficiently great to affect emissions during warming up of the catalytic converter.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running and the three-way catalytic converter is being heated up.
Substitute Value
- None.
Possible Source
- Other diagnostic trouble codes (DTCs) stored in the engine control module (ECM)
- Contact resistance or oxidation in the terminals between the throttle unit and the engine control module (ECM)
- Damaged throttle unit.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
Scheme 12
Scheme 13
- Ignition on
- Activate reading off the position of the throttle
- Check that both sensors indicate give values within the permitted range for different deployments
- Ignition off. Check the engine control module (ECM) and the throttle unit connector. Check for contact resistance. Check for oxidation. Check if the throttle unit is blocked. Press the throttle disc to check for jamming. Clean the throttle unit if necessary. Other information see «CONNECTING THE BREAKOUT BOX»(ref-466591-S26645247992012042500000) see «SIGNAL SPECIFICATION»(/volvo/v50/i-2007-2012/remont/testing-diagnostics/#engine-control-module-ecm-electricalsignal-specifications) see «THROTTLE BODY»(ref-466651-S01198376532012042500000) see «THROTTLE BODY, CLEANING»(/volvo/v50/i-2007-2012/remont/fuel-system/#throttle-body-removal-cleaning-and-installation__throttle-body-cleaning) see «CHECKING WIRING AND TERMINALS»(/volvo/v50/i-2007-2012/remont/body-electrical/#electrical-general-diagnostics-and-tests)
- Continue Refer to «VERIFICATION»(ref-466646-S29191643892012042500000)
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2000
Condition
Scheme 14
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a short-circuit to ground or supply voltage or an open-circuit in the engine coolant temperature (ECT) sensor circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- When starting: The intake air temperature (IAT) is used if no fault has been detected on the intake temperature sensor Otherwise the constant 20 °C is used
- After starting: The engine coolant temperature (ECT) is calculated based on a model
- The engine cooling fan (FC) is activated at the predefined speed.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Open-circuit in the signal cable
- Damaged engine coolant temperature (ECT) sensor.
Signal too low
- Short-circuit to ground in the signal cable
- Damaged engine coolant temperature (ECT) sensor.
Fault symptom[s]
- Engine difficult to start when warm
- Engine cooling fan (FC) running continuously even when the ignition is switched off
- Malfunction indicator lamp (MIL) lit
- The engine stops, but only when it is at operating temperature
- Uneven idle.
Scheme 15
- Ignition on. Check whether the fault is permanent or intermittent by reading off the signal from the engine coolant temperature (ECT) sensor. Check that the signal is within its permitted range. The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.
- Continue Refer to «CHECKING THE COMPONENT AND WIRING»(ref-466646-S42076469012012042500000)
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2000
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-200A
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the value from the engine coolant temperature (ECT) sensor deviates too much from the values for intake and outside temperatures after the engine has been switched off for an extended period.
The diagnostic trouble code (DTC) is diagnosed once per operating cycle, with the ignition on, but only when the temperature in the intake manifold has dropped by approximately 35 °C, or to within several degrees of the calculated ambient temperature, from engine operating temperature since the previous operating cycle.
Substitute Value
- When starting: The intake air temperature (IAT) is used if no fault has been detected on the intake temperature sensor. Otherwise the constant 20 °C is used
- After starting: The engine coolant temperature (ECT) is calculated based on a model
- Engine cooling fan (FC) is activated at the predefined speed.
Possible Source
- Contact resistance in the connector
- Damaged engine coolant temperature (ECT) sensor.
Fault symptom[s]
- Engine difficult to start when warm
- Engine cooling fan (FC) running continuously even when the ignition is switched off
- Malfunction indicator lamp (MIL) lit
- The engine stops, but only when it is at operating temperature
- Uneven idle.
Condition
Scheme 16
The engine control module (ECM) checks the circuit for the injectors.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for one of the injector circuits is missing.
The diagnostic trouble code (DTC) indicates which injector is being referred to.
- ECM-200B: injector 1
- ECM-201B: injector 2
- ECM-202B: injector 3
- ECM-203B: injector 4
- ECM-204B: injector 5.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance in the terminals
- Open-circuit in the signal cable
- Open-circuit in the power supply to the injector
- Damaged injector.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is not firing on all cylinders.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The engine control module (ECM) checks the circuit for the injectors.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for one of the injector circuits is too high.
The diagnostic trouble code (DTC) indicates which injector is being referred to.
- ECM-200C: injector 1
- ECM-201C: injector 2
- ECM-202C: injector 3
- ECM-203C: injector 4
- ECM-204C: injector 5.
The diagnostic trouble code (DTC) can be diagnosed at ignition on and with the engine running.
Substitute Value
- None.
Possible Source
- Short-circuit to supply voltage in the signal cable
- Damaged injector.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is not firing on all cylinders.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
Condition
The engine control module (ECM) checks the circuit for the injectors.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the signal for one of the injector circuits is too low.
The diagnostic trouble code (DTC) indicates which injector is being referred to.
- ECM-200D: injector 1
- ECM-201D: injector 2
- ECM-202D: injector 3
- ECM-203D: injector 4
- ECM-204D: injector 5.
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 injector.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine is not firing on all cylinders.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-200F
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the engine coolant temperature (ECT), interpreted by the engine coolant temperature (ECT) sensor, does not pass -30 °C a set time after starting from cold (lower than -30 °C).
The diagnostic trouble code (DTC) is diagnosed within 5 minutes with the engine running. Decisions about a faulty sensor can only be made if the engine coolant temperature (ECT) at start up is lower than -30 °C.
Substitute Value
- The engine cooling fan (FC) is activated at the predefined speed.
Possible Source
- Contact resistance in the connector
- Damaged engine coolant temperature (ECT) sensor.
Fault symptom[s]
- Engine difficult to start when warm
- Engine cooling fan (FC) running continuously even when the ignition is switched off
- Malfunction indicator lamp (MIL) lit
- The engine stops, but only when it is at operating temperature
- Uneven idle.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-201A
Condition
During the engine warm-up phase, the way the temperature increases is checked. This is compared with the expected temperature increase, calculated for example according to load conditions and starting temperature.
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the measured engine coolant temperature (ECT) deviates too much from a calculated temperature.
The diagnostic trouble code (DTC) is diagnosed with the engine running, at an engine coolant temperature (ECT) above 80 °C, after the engine has first been allowed to cool from operating temperature for at least 8 hours.
Substitute Value
- None.
Possible Source
- Damaged thermostat.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- The engine does not become warm.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-210A
Condition
Scheme 17
The engine control module (ECM) checks the signal from the heated oxygen sensor (HO2S).
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the heated oxygen sensor (HO2S) is not activated or is activated too slowly.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- None.
Possible Source
- Contact resistance in the terminals
- Damaged front heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-210F
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that the front heated oxygen sensor (HO2S) reacts too slowly to changes in the exhaust gas oxygen content.
The diagnostic trouble code (DTC) can be diagnosed approximately 4 minutes after the engine is started and if the following requirements are met.
- Engine coolant temperature (ECT) above 60 °C (engine at operating temperature)
- Fuel trim active
- Speed above 40 km/h
- Engine speed between 1500-3500 rpm.
Substitute Value
- Fuel trim switched off.
Possible Source
- Damaged front heated oxygen sensor (HO2S)
- Air leakage in the exhaust system.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2110
Condition
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a short-circuit to ground or supply voltage or an open-circuit in the preheating circuit for the front heated oxygen sensor (HO2S).
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Fuel trim switched off
- Front heated oxygen sensor (HO2S) preheating switched off.
Possible Source
Signal too low
- Damaged fuse.
- Open-circuit in the power cable
- Short-circuit to ground in the power cable
- Damaged front heated oxygen sensor (HO2S).
Signal too high
- Short-circuit to supply voltage in the power cable
- Damaged front heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2110
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2120
Condition
This diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a short-circuit to ground or supply voltage in the signal cable for the front heated oxygen sensor (HO2S) or if there is an open-circuit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- Fuel trim switched off.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Short-circuit to ground in the signal cable
- Damaged front heated oxygen sensor (HO2S).
Signal too low
- Open-circuit in the signal cable
- Damaged front heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2120
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2140
Condition
This diagnostic trouble code can only be stored during lambda regulation quick tests. This is a workshop test, for detecting air leaks or low fuel pressure. During the quick test, the Engine control module (ECM) receives information from the heated oxygen sensor about the fuel/air mixture with reset fuel adaptations. If the fuel/air mixture is outside certain parameters, this means that there is a fault that can cause diagnostic trouble codes related to lambda regulation to be stored during normal operation. I. e. diagnostic trouble codes ECM-21AC, ECM-21AD, ECM-21CC or ECM-21DD.
The diagnostic trouble code (DTC) is stored if the control module detects that
- Fuel/air mixture (lambda) deviates abnormally from the expected (lambda=1).
The control module's test for the diagnostic trouble code (DTC) starts in the event of
- Activate quick test
Note. The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.
Substitute Value
- None.
Possible Source
- Damaged heated oxygen sensor (HO2S).
- Intake air leakage.
- Air leakage in the exhaust system.
- Damaged mass air flow (MAF) sensor.
Fault symptom[s]
- None.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2140
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-214C
Condition
This diagnostic trouble code can only be stored during lambda regulation quick tests. This is a workshop test, for detecting air leaks or low fuel pressure. During the quick test, the Engine control module (ECM) receives information from the heated oxygen sensor about the fuel/air mixture with reset fuel adaptations. If the fuel/air mixture is outside certain parameters, this means that there is a fault that can cause diagnostic trouble codes related to lambda regulation to be stored during normal operation. I. e. diagnostic trouble codes ECM-21AC, ECM-21AD, ECM-21CC or ECM-21DD.
The diagnostic trouble code (DTC) is stored if the control module detects that
- Fuel/air mixture (lambda) deviates abnormally from the expected (lambda=1).
The control module's test for the diagnostic trouble code (DTC) starts in the event of
- Activate quick test
Note. The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.
Substitute Value
- None.
Possible Source
- Air leakage in the exhaust system.
- Low fuel pressure.
- Damaged heated oxygen sensor (HO2S).
Fault symptom[s]
- None.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-214C
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-214D
Condition
This diagnostic trouble code can only be stored during lambda regulation quick tests. This is a workshop test, for detecting air leaks or low fuel pressure. During the quick test, the Engine control module (ECM) receives information from the heated oxygen sensor about the fuel/air mixture with reset fuel adaptations. If the fuel/air mixture is outside certain parameters, this means that there is a fault that can cause diagnostic trouble codes related to lambda regulation to be stored during normal operation. I. e. diagnostic trouble codes ECM-21AC, ECM-21AD, ECM-21CC or ECM-21DD.
The diagnostic trouble code (DTC) is stored if the control module detects that
- Fuel/air mixture (lambda) deviates abnormally from the expected (lambda=1).
The control module's test for the diagnostic trouble code (DTC) starts in the event of
- Activate quick test
Note. The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.
Substitute Value
- None.
Possible Source
- Air leakage in the intake system.
- Low fuel pressure. High fuel pressure.
- Leaking injectors.
- Damaged mass air flow (MAF) sensor.
- Contaminated engine oil.
- Oil level too high.
- Damaged heated oxygen sensor (HO2S).
Fault symptom[s]
- None.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-214D
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21AC
Condition
The engine control module (ECM) receives information from the heated oxygen sensor (HO2S) about fuel / air mixture at both the upper and lower 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. The diagnostic trouble code (DTC) will be stored when the long-term trim must be adjusted almost to maximum in the upper and lower part-load ranges.
The diagnostic trouble code (DTC) can be diagnosed when driving under specific driving conditions.
Substitute Value
None.
Possible Source
- Too high ethanol content in fuel.
- Air leakage in the exhaust system
- Low fuel pressure
- Damaged heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
Scheme 18
HINT: The cause of the symptom and/or diagnostic trouble code may be that the vehicle has been refuelled with incorrect fuel for that vehicle. The fuel system contains fuel with too high ethanol content.
The energy content in ethanol-diluted fuel is lower than in pure gasoline. This means that the control module compensates for the lower energy content, by increasing the injection volume, to be able to reach lambda=1 at the front heated oxygen sensor. This compensation is normally called "Front lambda control slow" or "Lambda integrator", and varies to compensate for the vehicle's status in the form of component spread, small air leaks, wear, etc. The value of this compensation in the ideal case is 1.0 for pure gasoline. Increased ethanol content of the fuel increases the compensation by approx. 0.05 per 10% ethanol dilution.
The control module is designed to handle an ethanol dilution up to 25%. In combination with other deviations from the ideal case, however, lower ethanol content may be enough to cause customer symptoms. This mainly occurs at engine start with cool engine at outdoor temperatures below 0 °C. Then the diagnostic trouble code may also be set for the engine running on too lean mixture.
Note. In a vehicle intended for gasoline, only pure gasoline shall be used. Even if engine start/operation works, other fuel-related components in the vehicle may be damaged by too high ethanol content.
- Measure the ethanol content of the fuel according to the instructions below. If measured ethanol content is above 25%, then ethanol dilution is the likely cause of the symptom and/or to the diagnostic trouble code being stored. If measured ethanol content is below 25%, symptoms and/or diagnostic trouble code may have been caused by earlier occurrence of incorrect fuel in the system for that vehicle. HINT: Check refuelling history by talking to customer. If nothing indicates incorrect fuel, neither now nor earlier, continue troubleshooting to check other possible causes of faults.
Other information
- see «MEASURING THE ETHANOL CONTENT»(ref-466591-S09065369922012042500000)
- Continue Refer to «CHECKING COMPONENTS»(ref-466646-S30211606322012042500000)
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21AC
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21AD
Condition
The engine control module (ECM) receives information from the heated oxygen sensor (HO2S) about fuel / air mixture at both the upper and lower 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. The diagnostic trouble code (DTC) will be stored when the long-term trim must be adjusted almost to maximum in the upper and lower part-load ranges.
The diagnostic trouble code (DTC) can be diagnosed when driving under specific driving conditions.
Substitute Value
None.
Possible Source
- Air leakage in the intake system
- High fuel pressure
- Leaking injectors
- Damaged mass air flow (MAF) sensor
- Contaminated engine oil
- Oil level too high
- Damaged heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21AD
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21CC
Condition
The engine control module (ECM) 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. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. The diagnostic trouble code (DTC) will be stored when the long-term trim must be adjusted almost to maximum in the idle range.
The diagnostic trouble code (DTC) can be diagnosed when idling.
Substitute Value
None.
Possible Source
- Too high ethanol content in fuel.
- Air leakage in the intake system
- Damaged heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21CC
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21CD
Condition
The engine control module (ECM) 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. When the short-term fuel trim makes an adjustment, the integrator median must be adjusted by the long-term trim. The diagnostic trouble code (DTC) will be stored when the long-term trim must be adjusted almost to maximum in the idle range.
The diagnostic trouble code (DTC) can be diagnosed when idling.
Substitute Value
None.
Possible Source
- Leaking injectors
- Damaged mass air flow (MAF) sensor
- Contaminated engine oil
- Oil level too high
- Damaged heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-21CD
Condition
The engine control module (ECM) stores information about fuel trim in the various adaptation ranges. The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects that one of the codes for fuel trim (bank 1) is stored in two consecutive operating cycles.
Substitute Value
- None.
Possible Source
- Locate the fault cause in the diagnostic trouble codes (DTCs) covering "Long-term fuel trim".
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2200
Condition
Scheme 19
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that the resistance of the rear heated oxygen sensor (HO2S) in the pre-heating circuit is too high for a certain amount of time.
Substitute Value
None.
Possible Source
- Contact resistance or oxidation in the terminals
- Damaged rear heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2200
Condition
Scheme 20
The engine control module (ECM) assumes two initial values for probe voltage, 0 V and 5 V. If probe preheating is active and at least one fuel shut-off has been made, the heated oxygen sensor (HO2S) maximum value must have exceeded 0.6 V and the minimum value must have been below 0.3 V. The diagnostic trouble code (DTC) is stored and the engine control module (ECM) interprets it as a fault if these limit values are not achieved after approximately 5 minutes and both the accumulated and actual heated oxygen sensor preheating have reached certain limit values.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.
Substitute Value
- Rear heated oxygen sensor (HO2S) control shut off.
Possible Source
Signal too high
- Short-circuit to supply voltage in the signal cable
- Damaged rear heated oxygen sensor (HO2S).
Signal too low
- Short-circuit to ground in the signal cable
- Open-circuit in the signal cable
- Damaged rear heated oxygen sensor (HO2S).
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
See DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION ECM-2200