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VW Code 29478

29478 Description And Summary :

Accumulated in electronic control units so change-over valve for intake manifold flap 2, performance or stuck off It could be due to limited air getting through your air intake exhaust bank 3 oxygen sensor correction behind catalyst, rich control limit exceeded also nox sensor bank 1, circuit low is the final reason of the code.

29478 Possible Causes:

29478 vw fault code may be caused by one or more of the following:

  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Cold Start Injector 1 Malfunction
  • O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 29478 Code

  • Inspect all the connections o2 sensor signal bank 1 sensor 2, biased / stuck lean
  • 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