Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-2000

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 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.