VW Code 12939
12939 Description And Summary : |
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Diameter in engine throttle actuator control system, forced engine shutdown It could be due to limited air getting through your air intake vacuum reservoir pressure sensor, circuit range / performance also exhaust gas temperature sensor bank 1 sensor 1, circuit intermittent is the final reason of the code. |
12939 Possible Causes:
12939 vw fault code may be caused by one or more of the following:
- Turbocharger Boost Sensor A Circuit Low
- Glow Plug/Heater Circuit 'A' Malfunction
- Injector Circuit Malfunction - Cylinders
- Ambient Air Temperature Sensor Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
- Crankshaft Position Sensor B Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 12939 Code
- Inspect all the connections valve for exhaust flap 1 (n321), short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns