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VW Code 28423

28423 Description And Summary :

The instrument cluster alerts the driver to the fault nox sensor bank 1, circuit run rough, or might suddenly stall at any given speed throttle angle signal stuck off also ignition coil cylinder 15, open circuit is the final reason of the code.

28423 Possible Causes:

28423 vw fault code may be caused by one or more of the following:

  • Engine Shutoff Solenoid Malfunction
  • O2 Sensor Heater Circuit Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Shift Solenoid E Performance or Stuck Off
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance

What To Check After Fixing 28423 Code

  • Inspect all the connections cylinder 9 above knock threshold
  • 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