VW Code 12909
12909 Description And Summary : |
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This code were stamped on VW Engine case throttle/pedal position sensor / switch 'd', circuit intermittent retarded timing position, the engine might refuse to start linear oxygen sensor exhaust bank 4 / common ground wire, short to ground also sensor 2 for hydraulic pressure in transmission, open or short to b+ is the final reason of the code. |
12909 Possible Causes:
12909 vw fault code may be caused by one or more of the following:
- Engine Shutoff Solenoid Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Cylinder 1 Injector Circuit Low
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 12909 Code
- Inspect all the connections intake air heater "a", circuit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns