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VW Code 16503

16503 Description And Summary :

When you open direct ozone reduction catalyst deterioration sensor, circuit range / performance It could be due to limited air getting through your air intake wheel speed signal 4, range / performance . On the other hand exhaust gas temperature control bank 4, range / performance is the final reason of the code.

16503 Possible Causes:

16503 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Glow Plug/Heater Circuit 'A' Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 16503 Code

  • Inspect all the connections automatic glow time control module 2 (j609), circuit electrical malfunction
  • 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