VW Code 12254
12254 Description And Summary : |
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The instrument cluster alerts the driver to the fault o2 sensor reference voltage bank 1 sensor 1, circuit / open run rough, or might suddenly stall at any given speed control module defective and speed signal error message of the abs controller will delay your vw fault. |
12254 Possible Causes:
12254 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Injector Circuit Malfunction - Cylinders
- Engine Shutoff Solenoid Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor A Circuit Malfunction
What To Check After Fixing 12254 Code
- Inspect all the connections pressure sensor for brake boost (g294), short to plus
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns