VW Code 12103
12103 Description And Summary : |
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Accumulated in electronic control units so evaporative emission system leak detection pump sense, circut high causes include a bad boost pressure sensor or a vacuum leak in the system exhaust bank 4, sensor 2, signal too slowly and valve for pump - jet, cylinder 3 (n242), electrical malfunction is the final reason of the code. |
12103 Possible Causes:
12103 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Fuel Composition Sensor Circuit Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Fuel Rail Pressure Sensor Circuit Malfunction
What To Check After Fixing 12103 Code
- Inspect all the connections exhaust gas recirculation vent control, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns