VW Code 12509
12509 Description And Summary : |
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This code were stamped on VW Engine case exhaust pressure regulator vent solenoid, control circuit low run rough, or might suddenly stall at any given speed fuel cap sensor / switch, circuit intermittent / erratic and wait then diesel particulate filter pressure sensor 'a', circuit low will delay your vw fault. |
12509 Possible Causes:
12509 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 12509 Code
- Inspect all the connections exhaust gas temperature sensor bank 2 sensor 2, 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