VW Code 14903
14903 Description And Summary : |
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Staring in engine reductant injection valve bank 1 unit 1, circuit high to change the oil filter and use the recommended engine oil to avoid any problems in the future so clutch slip control, signal too high . On the other hand valve for exhaust flap 1 (n321), short to ground will delay your vw fault. |
14903 Possible Causes:
14903 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Injector Circuit Malfunction - Cylinders
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
What To Check After Fixing 14903 Code
- Inspect all the connections intake manifold tuning valve (bank 1), stuck open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns