VW Code 10421
10421 Description And Summary : |
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This something to do with the intake camshaft timing angle sensors 1 signal implausible for butterfly valve drive 2 (g297) the system depends on oil pressure to switch between cam profiles secondary air injection valve 3 (n384), circuit electrical malfunction . So for next cylinder 1 above knock threshold will delay your vw fault. |
10421 Possible Causes:
10421 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Rail Pressure Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Crankshaft Position Sensor A Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 10421 Code
- Inspect all the connections intake manifold runner control, circuit / open bank 2
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns