The P0303 diagnostic trouble code on your 2024 Volvo XC60 indicates the powertrain control module has detected consistent misfires in cylinder 3. The 2024 XC60 continues with refined versions of Volvo's modular 2.0L engines.
2024 XC60 Powertrains
The 2024 XC60 offers mild hybrid (B5/B6), extended range hybrid (T8), and other variants. The B-series adds 48V mild hybrid assistance. Cylinder 3 is third from the front on all inline-4 configurations.
Typical Causes
- Ignition Coil Problems: Forced induction requires reliable ignition
- Spark Plug Condition: Must match forced induction specs
- Boost System Integrity: Multiple boost sources
- Fuel Injector Issues: Direct injection concerns
- 48V Integration: Mild hybrid system interaction
Diagnostic Process
Use Volvo VIDA diagnostics for detailed access. Monitor boost and misfire data. Check for TSBs addressing known issues. Test ignition components systematically.
Repair Recommendations
Replace faulty ignition coils with OEM parts. Install properly specified spark plugs. Repair boost leaks. Dealer service ensures warranty coverage.