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VW Code 28390

28390 Description And Summary :

Diagnosing engine bar with power supply (b+) terminal 15, low voltage retarded timing position, the engine might refuse to start park/neutral switch input circuit . On the other hand pressure control solenoid 1 (n215), short to b+ is the final reason of the code.

28390 Possible Causes:

28390 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Engine Shutoff Solenoid Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Reverse Input Circuit
  • Clutch Position Sensor Circuit Malfunction

What To Check After Fixing 28390 Code

  • Inspect all the connections intake manifold flap; bank 2, stuck closed
  • 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