C2959 Subaru Xv OBD Code

OBD/2 C2959 error code description and symptoms.

Variable Cam Timing Over-advanced (Bank 1) The comprehensive component monitor (CCM) monitors the VCT position for an over-advanced camshaft timing.
The test fails when the camshaft timing exceeds a maximum calibrated value or remains in an advanced position. Cam timing improperly set No oil flow to the VCT piston chamber Low oil pressure VCT solenoid valve stuck closed Camshaft advance mechanism binding (VCT unit) C2959 DTC is a check of the VCT unit.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

C2959 Subaru Xv Error Code Repair Process :

If your autolamp delay circuit failure check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C2959 and engine control unit are in charge of monitoring a bunch of different autolamp delay circuit failure, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Subaru Xv C2959 OBD2 Code

A common cause of code C2959 is the failure of Autolamp Delay Circuit Failure, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Exhaust tube
Incorrect Positive Crankcase Ventilation (PCV) hose connection
Engine Control Module (ECM)

C2959 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C2959 Subaru Xv OBD Code

C2959 Subaru Xv Error Code Repair Process :

Common Causes of Subaru Xv C2959 OBD2 Code

C2959 code for other Subaru cars