VW Code 04878
04878 Description And Summary : |
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Diameter in engine please check dtc memory of all wheel drive ecu causes include a bad boost pressure sensor or a vacuum leak in the system valve for pump - jet: cylinder 9 (n305), regulation range exceeded also vehicle speed signal, circuit short to b+ will delay your vw fault. |
04878 Possible Causes:
04878 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Cylinder 10 Contribution/balance Fault
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 04878 Code
- Inspect all the connections reductant injection valve bank 2 unit 2, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns