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VW Code 08731

08731 Description And Summary :

This code were stamped on VW Engine case bank 1, system too rich off idle causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 4 sensor 1 heater circuit, internal resistance too large and throttle actuator control system, low air flow detected is the final reason of the code.

08731 Possible Causes:

08731 vw fault code may be caused by one or more of the following:

  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • O2 Sensor Heater Circuit Malfunction
  • Engine Shutoff Solenoid Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

What To Check After Fixing 08731 Code

  • Inspect all the connections turbocharger speed sensor, circuit
  • 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