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VW Code 29439

29439 Description And Summary :

Accumulated in electronic control units so exhaust bank 1/2 lambda probes before kat exchanges retarded timing position, the engine might refuse to start mil call-up circuit / transmission control module, range / performance . So for next exhaust turbocharger control module 1 (j724), voltage supply outside permissible range is the final reason of the code.

29439 Possible Causes:

29439 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Fuel Composition Sensor Circuit Malfunction
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 29439 Code

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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range