The P0304 diagnostic trouble code on your 2022 Toyota Camry indicates the powertrain control module has detected consistent misfires in cylinder 4. The 8th generation Camry offers multiple engine options.
2022 Camry Engine Options
The 2022 Camry offers the 2.5L Dynamic Force four-cylinder (203 hp), 2.5L hybrid (208 hp), or 3.5L V6 (301 hp). On the inline-4, cylinder 4 is rearmost. On the V6, cylinder 4 is on the rear bank.
Typical Causes
- Ignition Coil Problems: Coil-on-plug failures
- Spark Plug Condition: Toyota-specific requirements
- Fuel Injector Issues: D-4S dual injection system
- Carbon Deposits: Less common with D-4S but possible
- Vacuum Leaks: Intake system integrity
Diagnostic Process
Use Toyota diagnostics for detailed access. Monitor misfire counts across engine options. D-4S helps reduce carbon concerns. Test ignition components systematically.
Repair Recommendations
Replace faulty ignition coils with Denso parts. Install Toyota-specified spark plugs. D-4S system is generally reliable. Repair vacuum leaks.