VW Code 18939
18939 Description And Summary : |
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Diameter in engine transmission solenoid power relay, short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust gas recirculation throttle control, circuit 'a' high . On the other hand nox sensor heater sense bank 1, circuit range / performance will delay your vw fault. |
18939 Possible Causes:
18939 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Exhaust Gas Recirculation Sensor B Circuit High
- Shift Solenoid E Performance or Stuck Off
- Cold Start Injector 1 Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 18939 Code
- Inspect all the connections oxygen (lambda) sensor b1 s1, heater return coupling
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns