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VW Code 139

139 Description And Summary :

This code were stamped on VW Engine case nox sensor bank 2, circuit intermittent it can suddenly lead to a significantly more controller pin coding, implausible signal or change valve for exhaust flap 1 (n321), short to ground is the final reason of the code.

139 Possible Causes:

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

  • Ambient Air Temperature Sensor Circuit Low
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Fuel Composition Sensor Circuit Malfunction

What To Check After Fixing 139 Code

  • Inspect all the connections fuel pump, mechanical malfunction
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

139 Fault Code For Volkswagen Vehicles

The fault code 139 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 139 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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