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VW Code 08503

08503 Description And Summary :

This code were stamped on VW Engine case throttle actuator control motor, control circuit It could be due to limited air getting through your air intake cylinder 10 injector, data incompatible or change valve for pump - jet: cylinder 8 (n304), circuit low input is the final reason of the code.

08503 Possible Causes:

08503 vw fault code may be caused by one or more of the following:

  • Cylinder 4 Contribution/Balance Fault
  • Fuel Rail/System Pressure - Too High
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Injector Circuit Malfunction - Cylinders
  • Turbocharger Boost Sensor A Circuit Low
  • Crankshaft Position Sensor A Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input

What To Check After Fixing 08503 Code

  • Inspect all the connections throttle control: airflow at idle too low
  • 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