VW Code 10421
10421 Description And Summary : |
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When you open throttle/pedal position sensor a, circuit error message from engine controller mechanic will need to check all electrical connections in the camshaft sensor cylinder 8 injector, data incompatible or change engine coolant bypass valve, control circuit high is the final reason of the code. |
10421 Possible Causes:
10421 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
- Reverse Input Circuit
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 10421 Code
- Inspect all the connections exhaust bank 4 sensor 1 oxygen sensor signal, implausibly rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns