A P0304 diagnostic code on your 2024 Ford Explorer indicates the engine control module has detected repeated misfires in cylinder 4. The 6th generation Explorer offers turbocharged four-cylinder and V6 options.
2024 Explorer Engine Options
The 2024 Explorer offers the 2.3L EcoBoost four-cylinder (300 hp) or 3.0L EcoBoost V6 (400 hp in ST). On the inline-4, cylinder 4 is rearmost. On the V6, cylinder 4 is on one bank.
Common Causes
- Ignition Coil Failure: Turbo/twin-turbo stresses ignition
- Spark Plug Issues: EcoBoost-specific requirements
- Boost System Leaks: Turbo systems sensitive to leaks
- Fuel Injector Problems: Direct injection deposits
- Carbon Buildup: Common in direct injection
Diagnostic Approach
Use Ford IDS for detailed diagnostics. Identify your engine type first. Monitor boost and misfire data. Test ignition components systematically.
Repair Solutions
Replace failed ignition coils with Motorcraft components. Install engine-appropriate spark plugs. Repair boost leaks. Dealer service ensures warranty coverage.