VW Code 18503
18503 Description And Summary : |
|---|
The problem is about air leak between maf and throttle body it can suddenly lead to a significantly more injector control pressure regulator, circuit low you can see the injector cylinder 15 (n392), circuit low is the final reason of the code. |
18503 Possible Causes:
18503 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 18503 Code
- Inspect all the connections evaporative emission system leak detection pump 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