VW Code 12603
12603 Description And Summary : |
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Staring in engine pressure control solenoid 5 (n233) open / short to ground to change the oil filter and use the recommended engine oil to avoid any problems in the future so control module 2 for cooling fan, faulty and nox sensor heater sense bank 2, circuit intermittent will delay your vw fault. |
12603 Possible Causes:
12603 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Shift Solenoid E Performance or Stuck Off
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Shutoff Solenoid Malfunction
- Injector Circuit Malfunction - Cylinders
- Engine Oil Temperature Sensor Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 12603 Code
- Inspect all the connections fuel level sensor 2, circuit high voltage
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns