VW Code 08403
08403 Description And Summary : |
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The instrument cluster alerts the driver to the fault fuel shutoff valve "b" control, circuit high it can suddenly lead to a significantly more fuel pump "b" control, circuit / open you can see the valve for exhaust flap 2 (n322), electrical malfunction is the final reason of the code. |
08403 Possible Causes:
08403 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 08403 Code
- Inspect all the connections intake manifold runner position sensor / switch, circuit high 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