P1388 MAZDA Variable Cam Timing Overretarded Bank 2

Possible causes
– Cam timing improperly set
– Continuous oil flow to the VCT piston chamber
– VCT solenoid valve stuck open
– Camshaft advance mechanism binding (VCT unit).
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1388 MAZDA OBD Code Description

The comprehensive component monitor (CCM) monitors the VCT position for over-retarded camshaft timing. The test fails when the camshaft timing exceeds a maximum calibrated value or remains in a retarded position.

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