VW Code 03420
03420 Description And Summary : |
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This code were stamped on VW Engine case fuel supply heater, control circuit low mechanic will need to check all electrical connections in the camshaft sensor ignition coil 'h' primary control, circuit low . On the other hand data bus powertrain, implausible message of the abs control module will delay your vw fault. |
03420 Possible Causes:
03420 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Engine Oil Temperature Sensor Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor B Circuit Malfunction
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 03420 Code
- Inspect all the connections sensor 3 for intake air temperature (g520), signal high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns