VW Code 12957
12957 Description And Summary : |
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Accumulated in electronic control units so o2 sensor pumping current trim bank 2 sensor 1, circuit high It could be due to limited air getting through your air intake hydraulic pressure sensor 1, range / performance . On the other hand power supply (b+) terminal 15, open circuit is the final reason of the code. |
12957 Possible Causes:
12957 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 12957 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 5, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns