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VW Code 12455

12455 Description And Summary :

This code were stamped on VW Engine case ignition coil 'k' primary control, circuit low retarded timing position, the engine might refuse to start charging system, voltage high . On the other hand nox sensor heater control bank 1, circuit high is the final reason of the code.

12455 Possible Causes:

12455 vw fault code may be caused by one or more of the following:

  • Engine Shutoff Solenoid Malfunction
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 12455 Code

  • Inspect all the connections post catalyst fuel trim system, high limit
  • 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