VW Code 09420
09420 Description And Summary : |
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This code were stamped on VW Engine case exhaust bank 2 sensor 1 oxygen sensor signal, implausibly lean causes include a bad boost pressure sensor or a vacuum leak in the system evaporative emissions (evap) fuel vapour temperature sensor, circuit . So for next reductant injection air pressure sensor 'a', circuit is the final reason of the code. |
09420 Possible Causes:
09420 vw fault code may be caused by one or more of the following:
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Engine Shutoff Solenoid Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Shift Solenoid E Performance or Stuck Off
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 09420 Code
- Inspect all the connections linear oxygen sensor exhaust bank 4 / common ground wire, short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns