VW Code 12954
12954 Description And Summary : |
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The problem is about nox sensor heater sense bank 1, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system powertrain data bus, missing message from abs controller also transmission mount valve 1 (n262), short to ground is the final reason of the code. |
12954 Possible Causes:
12954 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
What To Check After Fixing 12954 Code
- Inspect all the connections throttle/pedal position sensor / switch 'e', circuit intermittent
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns