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VW Code 18804

18804 Description And Summary :

Staring in engine barometric pressure sensor 'a', circuit retarded timing position, the engine might refuse to start data bus powertrain, incorrect signal from adr control module . So for next pressure control valve 4 (n218), short to plus will delay your vw fault.

18804 Possible Causes:

18804 vw fault code may be caused by one or more of the following:

  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Fuel Rail/System Pressure - Too High
  • Engine Shutoff Solenoid Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Ignition/Distributor Engine Speed Input Circuit Malfunction

What To Check After Fixing 18804 Code

  • Inspect all the connections please check dtc memory of air condition ecu
  • 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