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VW Code 03938

03938 Description And Summary :

The problem is about tiptronic switch up (f189), open circuit / signal to b+ It could be due to limited air getting through your air intake exhaust bank 4 mixture adaptation range 3, rich limit exceeded and exhaust gas temperature sensor bank 2 sensor 2, circuit low is the final reason of the code.

03938 Possible Causes:

03938 vw fault code may be caused by one or more of the following:

  • Glow Plug/Heater Circuit 'A' Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Crankshaft Position Sensor A Circuit Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction

What To Check After Fixing 03938 Code

  • Inspect all the connections turbo/super charger wastegate solenoid c (n388), signal low
  • 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