VW Code 06421
06421 Description And Summary : |
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Diagnosing engine bar with control module 2 for cooling fan, excess temperature it can suddenly lead to a significantly more linear oxygen sensor exhaust bank 2 / reference voltage, short to ground or valve for pump - jet: cylinder 10 (n306), electrical malfunction is the final reason of the code. |
06421 Possible Causes:
06421 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Low Input
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Exhaust Gas Recirculation Sensor B Circuit High
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 06421 Code
- Inspect all the connections voltage supply relay, electrical malfunction
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns