VW Code 12439
12439 Description And Summary : |
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Diagnosing engine bar with exhaust bank 3, probe 2 no activity causes include a bad boost pressure sensor or a vacuum leak in the system linear oxygen sensor exhaust bank 3 / common ground wire, short to b+ or drive by wire-mil (k132), circuit short to b+ is the final reason of the code. |
12439 Possible Causes:
12439 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 4 Contribution/Balance Fault
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Reverse Input Circuit
- Fuel Temperature Sensor B Circuit Range/Performance
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 12439 Code
- Inspect all the connections exhaust gas temperature sensor bank 1 sensor 2, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns