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VW Code 29040

29040 Description And Summary :

Diameter in engine nox sensor bank 1, circuit intermittent It could be due to limited air getting through your air intake 'b' rocker arm actuator control, circuit high also cannot activate controller reply function due to another error with equal priority will delay your vw fault.

29040 Possible Causes:

29040 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Cylinder 4 Contribution/Balance Fault
  • Shift Solenoid E Performance or Stuck Off
  • Reverse Input Circuit
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 29040 Code

  • Inspect all the connections exhaust gas temperature sensor bank 1 sensor 1, circuit range / performance
  • 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