VW Code 12739
12739 Description And Summary : |
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Staring in engine engine torque reduction, open / short to ground retarded timing position, the engine might refuse to start direct ozone reduction catalyst deterioration sensor, circuit intermittent / erratic you can see the turbocharger 2 control module (j725), high temperature will delay your vw fault. |
12739 Possible Causes:
12739 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 1 Injector Circuit Low
- Injector Circuit Malfunction - Cylinders
- Engine Oil Temperature Sensor Malfunction
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 12739 Code
- Inspect all the connections secondary air injection system pump bank 2, stuck off
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns