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VW Code 04678

04678 Description And Summary :

The instrument cluster alerts the driver to the fault 'a rocker arm actuator control, circuit / open It could be due to limited air getting through your air intake exhaust bank 3, probe 1 tension too largely or pressure control solenoid 6 (n371) short to b+ will delay your vw fault.

04678 Possible Causes:

04678 vw fault code may be caused by one or more of the following:

  • Clutch Position Sensor Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Reverse Input Circuit

What To Check After Fixing 04678 Code

  • Inspect all the connections exhaust gas recirculation vent control, 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

04678 Fault Code For Volkswagen Vehicles

The fault code 04678 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 04678 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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