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VW Code 17603

17603 Description And Summary :

This code were stamped on VW Engine case supply voltage for fuel injector group b, short to b+ causes include a bad boost pressure sensor or a vacuum leak in the system injector cylinder 13 (n390), circuit high or 'b' rocker arm actuator control, circuit / open is the final reason of the code.

17603 Possible Causes:

17603 vw fault code may be caused by one or more of the following:

  • Cylinder 4 Contribution/Balance Fault
  • Fuel Rail/System Pressure - Too High
  • Crankshaft Position Sensor A Circuit Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction

What To Check After Fixing 17603 Code

  • Inspect all the connections data bus powertrain, missing message from instruments panel 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