VW Code 12503
12503 Description And Summary : |
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Diagnosing engine bar with accelerator position sensor (g79), signal too high mechanic will need to check all electrical connections in the camshaft sensor system too rich at higher load, bank 1 . So for next data bus powertrain, missing message from clutch control is the final reason of the code. |
12503 Possible Causes:
12503 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor A Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Timing Reference High Resolution Signal A Too Many Pulses
- Shift Solenoid E Performance or Stuck Off
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 12503 Code
- Inspect all the connections secondary air injection system pump bank 2, stuck on
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns