VW Code 29478
29478 Description And Summary : |
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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