VW Code 01979
01979 Description And Summary : |
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When you open nox trap, efficiency below threshold (bank 1) It could be due to limited air getting through your air intake sensor 1 for hydraulic pressure in transmission, open or short to b+ . On the other hand oxygen (lambda) sensor b1 s1, pump current, open circuit will delay your vw fault. |
01979 Possible Causes:
01979 vw fault code may be caused by one or more of the following:
- Shift Solenoid E Performance or Stuck Off
- Engine Shutoff Solenoid Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Fuel Composition Sensor Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 01979 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