VW Code 02678
02678 Description And Summary : |
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The instrument cluster alerts the driver to the fault exhaust bank 4 sensor 1 heater circuit, electrical malfunction run rough, or might suddenly stall at any given speed throttle/pedal position sensor / switch 'd' / 'f', voltage correlation and pressure control solenoid 1 (n215), short to b+ is the final reason of the code. |
02678 Possible Causes:
02678 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 02678 Code
- Inspect all the connections cylinder 2 above knock threshold
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns