VW Code 12554
12554 Description And Summary : |
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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