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VW Code 18420

18420 Description And Summary :

Accumulated in electronic control units so throttle actuator control system, forced limited rpm retarded timing position, the engine might refuse to start bank 1, cam shaft position sensor, discharge opening (g300), short-circuit to mass or valve for pump - jet, cylinder 3 (n242), electrical malfunction will delay your vw fault.

18420 Possible Causes:

18420 vw fault code may be caused by one or more of the following:

  • Clutch Position Sensor Circuit Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Fuel Composition Sensor Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

What To Check After Fixing 18420 Code

  • Inspect all the connections throttle angle signal stuck on
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

18420 Fault Code For Volkswagen Vehicles

The fault code 18420 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 18420 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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