A P0303 diagnostic code on your 2022 Volvo S60 indicates the engine control module has detected repeated misfires in cylinder 3. The sport sedan uses Volvo's modular 2.0L four-cylinder engines with various forced induction options.
S60 Engine Options
The 2022 S60 offers turbocharged (T5), turbo+supercharged (T6), and plug-in hybrid (T8) variants. Polestar Engineered models have enhanced performance. Cylinder 3 is third from the front on this inline-4.
Common Causes
- Ignition Coil Failure: Forced induction stresses ignition systems
- Spark Plug Issues: Twin-charged engines require specific plugs
- Boost System Leaks: Turbo and supercharger intake system
- Fuel Injector Problems: Direct injection deposits
- Supercharger Components: T6 drive belt and clutch
Diagnostic Approach
Use Volvo VIDA or compatible diagnostics. Monitor boost and misfire data. Test ignition components systematically. Check supercharger operation on T6 models.
Repair Solutions
Replace failed ignition coils with OEM components. Install Volvo-specified spark plugs. Repair boost system leaks. Address supercharger issues on T6 models.