VW Code 06421
06421 Description And Summary : |
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The problem is about exhaust gas recirculation cooling valve control, circuit high mechanic will need to check all electrical connections in the camshaft sensor valve for pump - jet, cylinder 1 (n240), electrical malfunction and throttle/fuel inhibit, circuit range / performance is the final reason of the code. |
06421 Possible Causes:
06421 vw fault code may be caused by one or more of the following:
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Ambient Air Temperature Sensor Circuit Low
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 06421 Code
- Inspect all the connections electronic control module incorrect coding
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns