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VW Code 15509

15509 Description And Summary :

Diameter in engine glow plug/heater relay 2 circuit, open or short to ground retarded timing position, the engine might refuse to start fuel cap sensor / switch, circuit high . On the other hand barometric pressure sensor 'a', circuit range / performance is the final reason of the code.

15509 Possible Causes:

15509 vw fault code may be caused by one or more of the following:

  • Turbocharger Boost Sensor A Circuit Low
  • Cylinder 4 Contribution/Balance Fault
  • Ambient Air Temperature Sensor Circuit Low
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Cylinder 10 Contribution/balance Fault
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Glow Plug/Heater Circuit 'A' Malfunction

What To Check After Fixing 15509 Code

  • Inspect all the connections reductant injection air pressure sensor 'a', circuit intermittent
  • 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