The P0303 diagnostic trouble code on your 2024 Volvo S60 indicates the powertrain control module has detected consistent misfires in cylinder 3. The 2024 S60 continues with refined versions of Volvo's modular 2.0L engines.
2024 S60 Powertrains
The 2024 S60 offers mild hybrid (B5) and plug-in hybrid variants. The B5 adds 48V mild hybrid assistance to the turbocharged engine. 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 turbo specifications
- Boost System Integrity: Sensitive to intake leaks
- Fuel Injector Issues: Direct injection concerns
- 48V Integration: Mild hybrid system
Diagnostic Process
Use Volvo VIDA diagnostics for detailed access. Monitor boost and misfire data. Check for TSBs. 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.