When your 2022 Dodge Hornet triggers the P0303 code, the powertrain control module has detected repeated misfires in cylinder 3. The all-new Hornet features modern turbocharged powertrains requiring specific diagnostic approaches.
Hornet Powertrain Options
The 2022 Hornet (as a 2023 model year launch) offers the 2.0L Hurricane turbocharged four-cylinder or the R/T plug-in hybrid with a 1.3L turbo. On both inline-4 engines, cylinder 3 is the third from the front. The turbo systems add diagnostic complexity.
Common Causes
- Ignition Coil Failure: Turbo engines stress ignition components
- Spark Plug Issues: Turbo applications require specific plugs
- Boost System Leaks: Vacuum and pressure leaks cause lean misfires
- Fuel Injector Problems: Direct injection system deposits
- Carbon Buildup: GDI technology contributes to valve deposits
Diagnostic Approach
Identify your powertrain type first. Use a diagnostic scanner to access turbo-specific data including boost pressure and fuel trim. Monitor misfire counts under various conditions. Test ignition components systematically.
Repair Solutions
Replace faulty ignition coils with Mopar components designed for turbo applications. Install properly specified spark plugs. Repair boost system leaks. Address carbon buildup through professional intake cleaning.