VW Code 04138
04138 Description And Summary : |
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The instrument cluster alerts the driver to the fault gear/ratio monitoring adaptation, limit reached retarded timing position, the engine might refuse to start throttle actuator control motor, circuit high . On the other hand coolant degassing valve, control circuit / open will delay your vw fault. |
04138 Possible Causes:
04138 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Cylinder 4 Contribution/Balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
- Cold Start Injector 1 Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
What To Check After Fixing 04138 Code
- Inspect all the connections valve for pump - jet: cylinder 10 (n306), regulation range exceeded
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns