logo

VW Code 01979

01979 Description And Summary :

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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range