Diagnostic Trouble Code (DTC) Information ECM-670D
Condition
The engine control module (ECM) checks the angle of the camshaft (its position in relation to the crankshaft).
If the intake camshaft's angle position deviates and is too low (the camshaft is "after" the crankshaft) during fuel trim, the Engine control module (ECM) interprets this as a fault and stores a DTC.
The diagnostic trouble code (DTC) can be diagnosed when the engine is hot and the camshaft is in position 0.
Substitute Value
- None. The Engine control module (ECM) switches off camshaft control.
Possible Source
- Poor engine oil quality
- Incorrectly adjusted camshafts
- The timing gear belt has jumped off the cogs.
- Air conditioning (A/C) compressor. Damaged camshaft reset valve.
- Mechanical fault in the variable valve timing (VVT) unit.
Fault symptom[s]
- Malfunction indicator lamp (MIL) lit.