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VW Code 12554

12554 Description And Summary :

The problem is about cannot activate controller reply function due to another error with equal priority causes include a bad boost pressure sensor or a vacuum leak in the system starter relay 1, electrical malfunction in circuit (relay stuck / does not switch) or reductant injection air pressure sensor 'a', circuit will delay your vw fault.

12554 Possible Causes:

12554 vw fault code may be caused by one or more of the following:

  • Timing Reference High Resolution Signal A Too Many Pulses
  • Crankshaft Position Sensor A Circuit Low Input
  • Reverse Input Circuit
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

What To Check After Fixing 12554 Code

  • Inspect all the connections powertrain databus, implausible engine temperature message from inst.
  • 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