VW Code 12974
12974 Description And Summary : |
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Accumulated in electronic control units so exhaust bank 4 sensor 1, voltage too low or air leak It could be due to limited air getting through your air intake linear oxygen sensor exhaust bank 4 / pump current, open circuit or change pressure control valve 1 (n215), open / short to ground is the final reason of the code. |
12974 Possible Causes:
12974 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Turbocharger Boost Sensor A Circuit Low
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 4 Contribution/Balance Fault
- Cold Start Injector 1 Malfunction
What To Check After Fixing 12974 Code
- Inspect all the connections exhaust bank 4 sensor 1 heater circuit, short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns