VW Code 03678
03678 Description And Summary : |
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Accumulated in electronic control units so secondary air injection system switching valve bank 2, stuck open mechanic will need to check all electrical connections in the camshaft sensor direct ozone reduction catalyst deterioration sensor, circuit range / performance or change intake manifold runner control, circuit / open bank 2 will delay your vw fault. |
03678 Possible Causes:
03678 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Injector Circuit Malfunction - Cylinders
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
- Engine Oil Temperature Sensor Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 1 Injector Circuit Low
What To Check After Fixing 03678 Code
- Inspect all the connections exhaust gas recirculation vent control, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns