logo

VW Code 04066

04066 Description And Summary :

The instrument cluster alerts the driver to the fault o2 sensor exhaust sample error bank 2 sensor 1 run rough, or might suddenly stall at any given speed performance malfunction in cooling system . So for next barometric pressure sensor 'a', circuit high is the final reason of the code.

04066 Possible Causes:

04066 vw fault code may be caused by one or more of the following:

  • Shift Solenoid E Performance or Stuck Off
  • Cylinder 4 Contribution/Balance Fault
  • Turbocharger Boost Sensor A Circuit Low
  • Crankshaft Position Sensor A Circuit Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance
  • O2 Sensor Heater Circuit Malfunction
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 04066 Code

  • Inspect all the connections fuel mixture control adjustment range 3, higher limit not reached
  • 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