Intermittent Loss of CMP or CKP

NAME OF CODE
Intermittent Loss of CMP or CKP

WHEN MONITORED:
Engine running or cranking.

SET CONDITION:
When the failure counter reaches 96 for 2 consecutive trips.

THEORY OF OPERATION
A failure counter is incremented whenever the correct number of crank signals is not seen between two cam signals. A bad trip is stored when the failure counter reaches 96. Two consecutive bad trips are required to set the fault.

POSSIBLE CAUSES:
- Open or shorted 5 volt supply circuit
- Open sensor ground
- Open or shorted signal circuit
- Excessive crankshaft sensor clearance
- Excessive camshaft sensor clearance
- Damaged crankshaft sensor rotating component
- Damaged camshaft sensor rotating component
- Failed sensor
- Failed PCM