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VW Code 03701

03701 Description And Summary :

Diameter in engine o2 sensor signal bank 2 sensor 3, biased / stuck rich causes include a bad boost pressure sensor or a vacuum leak in the system signal for back-up lights, open . So for next valve for coolant system circuit, high is the final reason of the code.

03701 Possible Causes:

03701 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Clutch Position Sensor Circuit Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 03701 Code

  • Inspect all the connections ng high pressure valve (n372), short to b+
  • 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