VW Code 12401
12401 Description And Summary : |
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Accumulated in electronic control units so intake manifold runner position sensor / switch, circuit low bank 1 causes include a bad boost pressure sensor or a vacuum leak in the system throttle angle signal stuck on . On the other hand throttle/fuel inhibit, circuit will delay your vw fault. |
12401 Possible Causes:
12401 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor B Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Cylinder 10 Contribution/balance Fault
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Temperature Sensor B Circuit Range/Performance
- O2 Sensor Heater Circuit Malfunction
- Reverse Input Circuit
What To Check After Fixing 12401 Code
- Inspect all the connections intake manifold flap position sensor (bank 1): implausible signal
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns