Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-P011621

Condition




The engine control module (ECM) monitors the engine temperature using a sensor.
The diagnostic trouble code is generated if the control module detects that the value from the engine temperature sensor deviates too much from the intake temperature, outside temperature or fuel temperature after the engine has been off for a long period of time.
The diagnostic trouble code is diagnosed at ignition on once per driving cycle, but only when the fuel temperature has dropped by at least 20 °C and has ended up near the outdoor temperature from the previous driving cycle.

Substitute value
- During start-up: The intake air temperature (IAT) is used if no fault has been detected on the intake temperature sensor
- After start-up: 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 connector.
- Damaged engine coolant temperature sensor.

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.
- Engine reluctant to start.
- Uneven idle.
- Engine stops.
- The engine cooling fan (FC) runs continuously even when the ignition is switched off.