VW Code 03503
03503 Description And Summary : |
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When you open linear oxygen sensor exhaust bank 4 / common ground wire, open circuit the system depends on oil pressure to switch between cam profiles secondary air injection system pump bank 1, stuck on . So for next direct ozone reduction catalyst temperature sensor, circuit low will delay your vw fault. |
03503 Possible Causes:
03503 vw fault code may be caused by one or more of the following:
- Crankshaft Position Sensor A Circuit Malfunction
- Reverse Input Circuit
- Glow Plug/Heater Circuit 'A' Malfunction
- Cylinder 10 Contribution/balance Fault
- Crankshaft Position Sensor A Circuit Low Input
- Cold Start Injector 1 Malfunction
What To Check After Fixing 03503 Code
- Inspect all the connections linear oxygen sensor exhaust bank 3 / reference voltage, implausible
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns