General Information

P0012 A Camshaft Position-Timing Over-Retarded

General Information

Component Location





General Description

Different from the existing fixed cam phase angle type, CVVT (Continuously Variable Valve Timing) is the device which varies cam phase angle continuously to be optimum. And with engine oil pressure, it operates. CVVT consists of OCV (Oil Control Valve) and cam phaser. OCV, mounted on cylinder head, controls the amount and direction of oil delivered to cam phaser by oil valve which is connected to a solenoid. Cam phaser, rotating cam phaser rotor with pressure and amount of oil produced by OCV, rotates cam shaft forcefully for or against the rotating direction and finally, cam shaft phase changes. With the appliance of CVVT, engine power,fuel efficiency and the quality of exhaust gas are improved.

DTC Description

If "Counter of x (original target - actual angle) > 3 Deg" is over 10 times under enable conditions, PCM sets DTC P0012.

DTC Detecting Condition





Specification





Schematic Diagram





Signal Waveform