VW Code 01904
01904 Description And Summary : |
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This code were stamped on VW Engine case a/c clutch relay, circuit short to b+ It could be due to limited air getting through your air intake hydraulic actuator position sender (g302), upper limit exceeded . So for next torque management request input signal a, low will delay your vw fault. |
01904 Possible Causes:
01904 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Reverse Input Circuit
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 01904 Code
- Inspect all the connections diesel particulate filter pressure sensor 'a', circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns