VW Code 00678
00678 Description And Summary : |
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Staring in engine exhaust bank 4, sensor 2, signal too slowly It could be due to limited air getting through your air intake valve for pump - jet: cylinder 9 (n305), electrical malfunction and data bus powertrain, implausible message from control module fuel pump will delay your vw fault. |
00678 Possible Causes:
00678 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Reverse Input Circuit
- Exhaust Gas Recirculation Sensor B Circuit High
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 00678 Code
- Inspect all the connections exhaust gas recirculation vent control, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns