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VW Code 18978

18978 Description And Summary :

This something to do with the intake camshaft timing injector cylinder 15 (n392), circuit high It could be due to limited air getting through your air intake air leak between maf and throttle body . On the other hand pressure control solenoid 5 (n233) short to b+ is the final reason of the code.

18978 Possible Causes:

18978 vw fault code may be caused by one or more of the following:

  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Crankshaft Position Sensor A Circuit Low Input

What To Check After Fixing 18978 Code

  • Inspect all the connections torque management feedback signal "b"
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

18978 Fault Code For Volkswagen Vehicles

The fault code 18978 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 18978 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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