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VW Code 09420

09420 Description And Summary :

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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range