General Information

Engine Control
P0014 \'B\' Camshaft Position - Timing Over-Advanced or System Performance (Bank 1) - 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, controlls 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(intake advance/exhaust retard) or against(intake retard/exhaust advance) 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 there is a delay between the target angle and the real angle over 10 times, ECM sets DTC P0014.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig 1) Normal waveform of OCV & Ex-CMPS at idle.