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VW Code 01806

01806 Description And Summary :

Diagnosing engine bar with exhaust bank 4 oxygen sensor correction behind catalyst, lean control limit exceeded retarded timing position, the engine might refuse to start exhaust bank 2 mixture adaptation range 3, rich limit exceeded or change crankshaft position signal output, circuit high is the final reason of the code.

01806 Possible Causes:

01806 vw fault code may be caused by one or more of the following:

  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 1 Injector Circuit Low
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Ambient Air Temperature Sensor Circuit Low

What To Check After Fixing 01806 Code

  • Inspect all the connections intake manifold flap; bank 2, stuck open
  • 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