VW Code 12509
12509 Description And Summary : |
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Accumulated in electronic control units so control module defective causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 3, probe 1 no activity . So for next air leak between throttle body and intake valves is the final reason of the code. |
12509 Possible Causes:
12509 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Reverse Input Circuit
What To Check After Fixing 12509 Code
- Inspect all the connections please check dtc memory of transmission ecu
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns