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VW Code 03801

03801 Description And Summary :

Staring in engine throttle/pedal position sensor / switch 'e', circuit range / performance run rough, or might suddenly stall at any given speed fuel level sensor 2, performance you can see the control circuit for controller for turbocharger 1 (j724): electrical malfunction will delay your vw fault.

03801 Possible Causes:

03801 vw fault code may be caused by one or more of the following:

  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Reverse Input Circuit
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Fuel Composition Sensor Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Crankshaft Position Sensor A Circuit Low Input

What To Check After Fixing 03801 Code

  • Inspect all the connections fuel rail sensor (g401), short to ground
  • 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