VW Code 01904
01904 Description And Summary : |
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Accumulated in electronic control units so bank 2, cam shaft position sensor, discharge opening (g301), short-circuit to mass causes include a bad boost pressure sensor or a vacuum leak in the system load signal from alternator terminal df, short to ground . So for next reductant injection valve bank 1 unit 2, circuit high will delay your vw fault. |
01904 Possible Causes:
01904 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Cylinder 4 Contribution/Balance Fault
- Turbocharger Boost Sensor A Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Clutch Position Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 01904 Code
- Inspect all the connections o2 sensor pumping current trim bank 1 sensor 1, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns