VW Code 17478
17478 Description And Summary : |
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Diameter in engine o2 sensor reference voltage bank 1 sensor 1, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system engine coolant level sensor / switch, circuit high . On the other hand secondary air injection system air flow/pressure sensor bank 2, circuit intermittent / erratic is the final reason of the code. |
17478 Possible Causes:
17478 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- O2 Sensor Heater Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 17478 Code
- Inspect all the connections o2 sensor reference voltage bank 2 sensor 1, performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns