VW Code 12257
12257 Description And Summary : |
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Accumulated in electronic control units so radiator fan 3 (v284), movement restricted / jammed retarded timing position, the engine might refuse to start a/c refrigerant pressure sensor 'b', circuit low you can see the reductant injection valve bank 1 unit 2, circuit low is the final reason of the code. |
12257 Possible Causes:
12257 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Engine Oil Temperature Sensor Malfunction
- Injector Circuit Malfunction - Cylinders
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 12257 Code
- Inspect all the connections exhaust bank 3, probe 1 heating circuit achievement too small
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns