VW Code 09421
09421 Description And Summary : |
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This code were stamped on VW Engine case fuel level sensor 2, circuit causes include a bad boost pressure sensor or a vacuum leak in the system turbo/super charger wastegate solenoid d (n389), electrical also controller for radiator exhaust oh run (j138), short-circuit after pluses will delay your vw fault. |
09421 Possible Causes:
09421 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 1 Injector Circuit Low
- Reverse Input Circuit
- Shift Solenoid E Performance or Stuck Off
- Crankshaft Position Sensor A Circuit Malfunction
- 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)
What To Check After Fixing 09421 Code
- Inspect all the connections evaporative emissions (evap) fuel vapour temperature sensor, circuit low voltage
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns