C0172 Citroen C5 Ii OBD Code

OBD/2 C0172 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) C0172 DTC is a check of the VCT unit.

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

C0172 Citroen C5 Ii Error Code Repair Process :

If your seat driver front up/down motor stalled 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 C0172 and engine control unit are in charge of monitoring a bunch of different seat driver front up/down motor stalled, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Citroen C5 Ii C0172 OBD2 Code

A common cause of code C0172 is the failure of Seat Driver Front Up/Down Motor Stalled, but there are several other possible causes as well, such as ;

Camshaft advance mechanism binding (VCT unit)
Erratic camshaft position due to low oil pressure
Fuel pressure
Faulty oil control valve (OCV)

C0172 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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C0172 Citroen C5 Ii OBD Code

C0172 Citroen C5 Ii Error Code Repair Process :

Common Causes of Citroen C5 Ii C0172 OBD2 Code

C0172 code for other Citroen cars