VW Code 12104
12104 Description And Summary : |
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Accumulated in electronic control units so nox sensor bank 1, circuit range / performance retarded timing position, the engine might refuse to start linear oxygen sensor exhaust bank 4 / pump current, short to ground . On the other hand supply voltage for fuel injector group b, short to b+ is the final reason of the code. |
12104 Possible Causes:
12104 vw fault code may be caused by one or more of the following:
- Engine Oil Temperature Sensor Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 1 Injector Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
- Glow Plug/Heater Circuit 'A' Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 12104 Code
- Inspect all the connections transmission coolant circuit relay, intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns