U04A4 Porsche Cayman OBD Code

OBD/2 U04A4 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) U04A4 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.

U04A4 Porsche Cayman Error Code Repair Process :

The rule of U04A4 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 engine oil pressure sensor/switch circuit malfunction. Likewise, overriding the OBD U04A4 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 (Soso)

Repair Time (30 Min.)

Cost Prediction : $ 80-170

Common Causes of Porsche Cayman U04A4 OBD2 Code

A common cause of code U04A4 is the failure of Engine Oil Pressure Sensor/Switch Circuit Malfunction, but there are several other possible causes as well, such as ;

• Camshaft advance mechanism binding (VCT unit)
• EVAP canister or fuel tank leaks
• EVAP system hose leaking
• Internal electrical failures in actuator motors/solenoids.

U04A4 is a kind of Network Trouble Code U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

U04A4 code for other Porsche cars

You can view according U04A4 DTC for your car model. We selected several models to see obd2 solutions click and view it.

• U04A4 Porsche 1300
• U04A4 Porsche 3400
• U04A4 Porsche 356
• U04A4 Porsche 550
• U04A4 Porsche 718
• U04A4 Porsche 804
• U04A4 Porsche 901
• U04A4 Porsche 904
• U04A4 Porsche 906
• U04A4 Porsche 907
• U04A4 Porsche 908
• U04A4 Porsche 910
• U04A4 Porsche 911
• U04A4 Porsche 911 Type 991
• U04A4 Porsche 911 Type 996
• U04A4 Porsche 911 Type 997
• U04A4 Porsche 912
• U04A4 Porsche 914
• U04A4 Porsche 917
• U04A4 Porsche 924
• U04A4 Porsche 928
• U04A4 Porsche 930
• U04A4 Porsche 931
• U04A4 Porsche 935
• U04A4 Porsche 936
• U04A4 Porsche 937
• U04A4 Porsche 944
• U04A4 Porsche 959
• U04A4 Porsche 962
• U04A4 Porsche 964
• U04A4 Porsche 965
• U04A4 Porsche 968
• U04A4 Porsche 986
• U04A4 Porsche 993
• U04A4 Porsche 996
• U04A4 Porsche Boxster
• U04A4 Porsche Boxster Type 981
• U04A4 Porsche Boxster Type 986
• U04A4 Porsche Boxster Type 987
• U04A4 Porsche Carrera Gt
• U04A4 Porsche Cayenne
• U04A4 Porsche Cayenne Type 92a
• U04A4 Porsche Cayenne Type 9pa
• U04A4 Porsche Cayman Type 718
• U04A4 Porsche Cayman Type 981
• U04A4 Porsche Cayman Type 987
• U04A4 Porsche Coupe
• U04A4 Porsche Dp
• U04A4 Porsche Gt
• U04A4 Porsche Gt2
• U04A4 Porsche Gt3
• U04A4 Porsche Karisma
• U04A4 Porsche Kremer
• U04A4 Porsche Macan Type 95b
• U04A4 Porsche Mega
• U04A4 Porsche Panamera Type 970
• U04A4 Porsche Panamericana
• U04A4 Porsche Rsk
• U04A4 Porsche Tapiro

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