VW Code 15303
15303 Description And Summary : |
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This code were stamped on VW Engine case post catalyst fuel trim system, high limit the system depends on oil pressure to switch between cam profiles reductant temperature sensor, circuit low and data-bus powertrain, missing message from fuel injection pump will delay your vw fault. |
15303 Possible Causes:
15303 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Fuel Temperature Sensor B Circuit Range/Performance
- O2 Sensor Heater Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 15303 Code
- Inspect all the connections throttle position output, 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