VW Code 01904
01904 Description And Summary : |
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The problem is about linear oxygen sensor exhaust bank 3 / reference voltage, open circuit causes include a bad boost pressure sensor or a vacuum leak in the system bank 1, cam shaft position sensor, discharge opening (g300), interruption / short-circuit to b+ or change control module 2 for cooling fan, faulty will delay your vw fault. |
01904 Possible Causes:
01904 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Cylinder 10 Contribution/balance Fault
- Shift Solenoid E Performance or Stuck Off
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor B Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 01904 Code
- Inspect all the connections water in fuel sensor, circuit range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns