Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information

Condition




Diagnostic trouble code (DTC) ECM-6400 is stored if the engine control module (ECM) registers a fault in the signal cable to the camshaft reset valve.

Substitute value
- shutting off the variable camshaft.

Possible source

Signal too high:
- short-circuit to supply voltage in the signal cable
- defective camshaft reset valve.

Signal too low:
- short-circuit to ground in the signal cable
- short-circuit to ground in the voltage supply cable
- defective camshaft reset valve
- contact resistance.

Signal missing:
- defective camshaft reset valve
- open-circuit in the signal cable
- open-circuit in the voltage supply cable.

Fault symptom[s]
- malfunction indicator lamp (MIL) lit
- uneven idling.