C3954 Trouble Code

View C3954 obd/2 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) C3954 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.

Difficulty Level (Soso)

Repair Time (30 Min.)

Cost Prediction : $ 80-170

C3954 Error Code Repair Process :

The rule of C3954 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of mismatched pcm and/or abs-tc module. Likewise, overriding the OBD C3954 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

C3954 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.

Common Causes of C3954

A common cause of code C3954 is the failure of Mismatched PCM and/or ABS-TC Module, but there are several other possible causes as well, such as ;

• Camshaft advance mechanism binding (VCT unit)
• Exhaust tube
• EVAP system hose leaking
• Variable Camshaft Timing (VCT) position circuit poor electrical connection

C3954 code for all cars

You can view according C3954 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C3954 Caterham C

+C3954 Opel Kraftfahrzeug

+C3954 Graf Und Stift Sp

+C3954 Chevrolet Matiz

+C3954 Volkswagen Touran Ii

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

About Us | Contact | Privacy

Copyright 2017 © All rights reserved