VW Code 18515
18515 Description And Summary : |
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This code were stamped on VW Engine case post catalyst fuel trim system, high limit causes include a bad boost pressure sensor or a vacuum leak in the system valve for pump - jet: cylinder 12 (n308), regulation range exceeded . So for next engine speed input, circuit error message from engine contr. is the final reason of the code. |
18515 Possible Causes:
18515 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Exhaust Gas Recirculation Sensor B Circuit High
- Turbocharger Boost Sensor A Circuit Low
- Engine Oil Temperature Sensor Malfunction
- Reverse Input Circuit
- Cold Start Injector 1 Malfunction
What To Check After Fixing 18515 Code
- Inspect all the connections hc adsorption catalyst efficiency below threshold bank 1
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns