Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-6400

Condition




The diagnostic trouble code (DTC) is stored if the engine control module (ECM) detects a short-circuit to supply voltage (high signal), short-circuit to ground (low signal) or an open-circuit (signal missing) in the signal circuit between the intake camshaft reset valve and the engine control module (ECM).
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute value
- Variable intake camshaft control switched off.

Possible source

Signal too high
- Short-circuit to supply voltage in the signal cable
- Damaged (intake) camshaft reset valve.

Signal too low
- Short-circuit to ground in the signal cable
- Short-circuit to ground in the power supply cable
- Contact resistance in the connectors
- Damaged (intake) camshaft reset valve.

Signal missing
- Open-circuit in the signal cable
- Open-circuit in the power supply cable
- Damaged (intake) camshaft reset valve.

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Uneven idle
- Deterioration in performance
- The engine stops.