VW Code 12003
12003 Description And Summary : |
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When you open mass-airflow sensor 3 (g456), signal to high it can suddenly lead to a significantly more turbocharger speed sensor, circuit or change o2 sensor reference voltage bank 1 sensor 1, performance is the final reason of the code. |
12003 Possible Causes:
12003 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cylinder 10 Contribution/balance Fault
- Fuel Rail Pressure Sensor Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 12003 Code
- Inspect all the connections altitude adaptation, signal out of tolerance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns