VW Code 12638
12638 Description And Summary : |
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Staring in engine 'a' rocker arm actuator system, stuck on mechanic will need to check all electrical connections in the camshaft sensor data bus powertrain, implausible message of the clutch electrics also please check dtc memory of steering electronics (j527) is the final reason of the code. |
12638 Possible Causes:
12638 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Reverse Input Circuit
- Cylinder 10 Contribution/balance Fault
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 12638 Code
- Inspect all the connections signal for back-up lights, open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns