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VW Code 29840

29840 Description And Summary :

The problem is about turbocharger boost control position sensor 'b', circuit run rough, or might suddenly stall at any given speed cylinder 9 above knock threshold you can see the throttle/pedal position sensor / switch 'f', circuit range / performance will delay your vw fault.

29840 Possible Causes:

29840 vw fault code may be caused by one or more of the following:

  • Fuel Composition Sensor Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Engine Shutoff Solenoid Malfunction
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 29840 Code

  • Inspect all the connections exhaust bank 4 mixture adaptation range 3, lean limit not reached
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

29840 Fault Code For Volkswagen Vehicles

The fault code 29840 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 29840 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range