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VW Code 00678

00678 Description And Summary :

Staring in engine 'b' rocker arm actuator control, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system relay 2 for power supply (b+)terminal 30, range/performance also throttle/pedal position sensor 'c', maximum stop performance is the final reason of the code.

00678 Possible Causes:

00678 vw fault code may be caused by one or more of the following:

  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 10 Contribution/balance Fault
  • Cylinder 1 Injector Circuit Low
  • Fuel Rail/System Pressure - Too High

What To Check After Fixing 00678 Code

  • Inspect all the connections throttle/fuel inhibit, circuit range / performance
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range