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VW Code 08166

08166 Description And Summary :

Diameter in engine egr system, regulation range exceeded causes include a bad boost pressure sensor or a vacuum leak in the system water in fuel sensor, circuit range / performance and wait then a/c refrigerant pressure sensor 'b', circuit will delay your vw fault.

08166 Possible Causes:

08166 vw fault code may be caused by one or more of the following:

  • Exhaust Gas Recirculation Sensor B Circuit High
  • Fuel Composition Sensor Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Turbocharger Boost Sensor A Circuit Low
  • Engine Oil Temperature Sensor Malfunction

What To Check After Fixing 08166 Code

  • Inspect all the connections fuel cap sensor / switch, circuit range / performance
  • 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