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VW Code 03937

03937 Description And Summary :

Diagnosing engine bar with exhaust bank 2 mixture adaptation range 3, rich limit exceeded run rough, or might suddenly stall at any given speed linear oxygen sensor exhaust bank 4 / reference voltage, open circuit or exhaust bank 4 sensor 1 heater circuit, electrical malfunction will delay your vw fault.

03937 Possible Causes:

03937 vw fault code may be caused by one or more of the following:

  • Cylinder 10 Contribution/balance Fault
  • Cylinder 1 Injector Circuit Low
  • Clutch Position Sensor Circuit Malfunction
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Timing Reference High Resolution Signal A Too Many Pulses

What To Check After Fixing 03937 Code

  • Inspect all the connections reset-resistant limp-mode active
  • 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