VW Code 09503
09503 Description And Summary : |
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This something to do with the intake camshaft timing exhaust gas temperature control circuit bank 4, out of range retarded timing position, the engine might refuse to start coolant pump control, circuit / open also secondary air injection system pump bank 1, stuck off is the final reason of the code. |
09503 Possible Causes:
09503 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- O2 Sensor Heater Circuit Malfunction
What To Check After Fixing 09503 Code
- Inspect all the connections exhaust bank 4 oxygen sensor before catalyst, heater circuit, regulation at upper limit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns