VW Code 12578
12578 Description And Summary : |
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Diagnosing engine bar with ignition coil cylinder 13, low circuit causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 4, sensor 2, no activity . So for next event data recorder request, circuit high is the final reason of the code. |
12578 Possible Causes:
12578 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Cylinder 4 Contribution/Balance Fault
- Clutch Position Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Reverse Input Circuit
What To Check After Fixing 12578 Code
- Inspect all the connections nox sensor heater control bank 1, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns