VW Code 10421
10421 Description And Summary : |
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Diameter in engine vehicle speed signal, error message from instrument cluster causes include a bad boost pressure sensor or a vacuum leak in the system a camshaft position actuator control bank 1, circuit low and data bus powertrain, missing message for central electric controller is the final reason of the code. |
10421 Possible Causes:
10421 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Reverse Input Circuit
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 10421 Code
- Inspect all the connections turbocharger control module 1, implausible message
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns