A P0304 diagnostic code on your 2022 Toyota Tundra indicates the powertrain control module has detected repeated misfires in cylinder 4. The completely redesigned 3rd generation Tundra features an all-new twin-turbo V6.
2022 Tundra Powertrain
The redesigned 2022 Tundra uses the i-FORCE 3.4L twin-turbocharged V6 (389 hp) or i-FORCE MAX hybrid (437 hp). Cylinder 4 is on one bank of this V6. The twin-turbo system requires specific diagnostic approaches.
Common Causes
- Ignition Coil Failure: Twin-turbo stresses ignition systems
- Spark Plug Issues: Turbo engines require specific plugs
- Boost System Leaks: Twin-turbo sensitive to intake leaks
- Fuel Injector Problems: Direct injection deposits
- Software Calibration: First-year model may have updates
Diagnostic Approach
Use Toyota Techstream for detailed twin-turbo diagnostics. Monitor boost pressure and misfire data. Check for TSBs. Test ignition components systematically.
Repair Solutions
Replace faulty ignition coils with OEM components. Install properly specified spark plugs. Repair boost leaks. Check for ECM software updates.