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VW Code 12409

12409 Description And Summary :

Diameter in engine please check dtc memory of adr control module run rough, or might suddenly stall at any given speed sensor 3 for intake air temperature (g520), signal high or intake air heater "a", circuit high will delay your vw fault.

12409 Possible Causes:

12409 vw fault code may be caused by one or more of the following:

  • Fuel Temperature Sensor B Circuit Range/Performance
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • O2 Sensor Heater Circuit Malfunction
  • Cylinder 10 Contribution/balance Fault
  • Cylinder 4 Contribution/Balance Fault
  • Cold Start Injector 1 Malfunction
  • Fuel Rail/System Pressure - Too High
  • Crankshaft Position Sensor A Circuit Malfunction

What To Check After Fixing 12409 Code

  • Inspect all the connections sensor 1 for hydraulic pressure in transmission, open or short to b+
  • 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