VW Code 16503
16503 Description And Summary : |
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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