C3838 Porsche 904 OBD Code

OBD/2 C3838 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) C3838 DTC is a check of the VCT unit.

A good starting point in your diagnosis is checking all system fuses and fusible links. This can be done using the DVOM on the voltage setting. You will want to test the fuses with circuits loaded. Some fuses will appear normal until a load is placed on their respective circuit; at which point they will fail. This has been the cause of many 'phantom malfunctions'. Consult your vehicle information source for fuse and fusible link locations. If all fuses are in working order, you may want to check TCM relay operation by swapping identical relays. Usually the horn relay, starter relay, fuel pump relay, air conditioning clutch relay, and controller relays are similar enough in design to swap for diagnostic purposes.

C3838 Porsche 904 Error Code Repair Process :

The rule of C3838 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 adaptive mode switch circuit failure. Likewise, overriding the OBD C3838 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.

Difficulty Level (Expert)

Repair Time (60 Min.)

Cost Prediction : $ 80-170

Common Causes of Porsche 904 C3838 OBD2 Code

A common cause of code C3838 is the failure of Adaptive Mode Switch Circuit Failure, but there are several other possible causes as well, such as ;

• Camshaft advance mechanism binding (VCT unit)
• Failures of clutch motion/travel sensors.
• Failures of clutch motion/travel sensors.
• Incorrect Positive Crankcase Ventilation (PCV) hose connection

C3838 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.

C3838 code for other Porsche cars

You can view according C3838 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• C3838 Porsche 1300
• C3838 Porsche 3400
• C3838 Porsche 356
• C3838 Porsche 550
• C3838 Porsche 718
• C3838 Porsche 804
• C3838 Porsche 901
• C3838 Porsche 906
• C3838 Porsche 907
• C3838 Porsche 908
• C3838 Porsche 910
• C3838 Porsche 911
• C3838 Porsche 911 Type 991
• C3838 Porsche 911 Type 996
• C3838 Porsche 911 Type 997
• C3838 Porsche 912
• C3838 Porsche 914
• C3838 Porsche 917
• C3838 Porsche 924
• C3838 Porsche 928
• C3838 Porsche 930
• C3838 Porsche 931
• C3838 Porsche 935
• C3838 Porsche 936
• C3838 Porsche 937
• C3838 Porsche 944
• C3838 Porsche 959
• C3838 Porsche 962
• C3838 Porsche 964
• C3838 Porsche 965
• C3838 Porsche 968
• C3838 Porsche 986
• C3838 Porsche 993
• C3838 Porsche 996
• C3838 Porsche Boxster
• C3838 Porsche Boxster Type 981
• C3838 Porsche Boxster Type 986
• C3838 Porsche Boxster Type 987
• C3838 Porsche Carrera Gt
• C3838 Porsche Cayenne
• C3838 Porsche Cayenne Type 92a
• C3838 Porsche Cayenne Type 9pa
• C3838 Porsche Cayman
• C3838 Porsche Cayman Type 718
• C3838 Porsche Cayman Type 981
• C3838 Porsche Cayman Type 987
• C3838 Porsche Coupe
• C3838 Porsche Dp
• C3838 Porsche Gt
• C3838 Porsche Gt2
• C3838 Porsche Gt3
• C3838 Porsche Karisma
• C3838 Porsche Kremer
• C3838 Porsche Macan Type 95b
• C3838 Porsche Mega
• C3838 Porsche Panamera Type 970
• C3838 Porsche Panamericana
• C3838 Porsche Rsk
• C3838 Porsche Tapiro

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