P1391 CHRYSLER – CMP or CKP Signal Intermittent Condition

P1391 CHRYSLER Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Lack/Loss of Power,The engine may be harder to start,The engine may stumble or stall

P1391 CHRYSLER Possible Causes

Faulty Crankshaft Position Sensor (CKP),Crankshaft Position Sensor (CKP) harness is open or shorted,Crankshaft Position Sensor (CKP) circuit poor electrical connection,Timing belt or chain stretched or jumped,Faulty Camshaft Position (CMP) Sensor,Camshaft Position (CMP) Sensor harness is open or shorted,Camshaft Position (CMP) Sensor circuit poor electrical connection.

P1391 CHRYSLER Description

The Engine Control Module (ECM) detected the actual Camshaft Position Sensor (CMP) position disagreed with the expected CMP level.