VW Code 12903
12903 Description And Summary : |
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Staring in engine cylinder 6 above knock threshold run rough, or might suddenly stall at any given speed linear oxygen sensor exhaust bank 2 / pump current, open circuit and exhaust gas temperature sensor 2 bank 2 (g449), high will delay your vw fault. |
12903 Possible Causes:
12903 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 12903 Code
- Inspect all the connections a/c refrigerant distribution valve control, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns