The P0304 code in your 2022 Nissan Titan indicates the engine control module has detected persistent misfires in cylinder 4. The Titan's powerful 5.6L V8 requires understanding of V8 cylinder configuration and truck-duty considerations for effective diagnosis and repair of this combustion problem.
Understanding P0304 in the 2022 Titan
The 2022 Titan features the 5.6L Endurance V8 producing 400 horsepower through variable valve timing and direct fuel injection. This V8 positions cylinder 4 on the right (passenger) bank toward the rear. Nissan V8 engines typically number cylinders 2, 4, 6, 8 on the right bank. The engine management system identifies cylinder 4 misfires through crankshaft velocity pattern analysis.
Full-Size Truck Misfire Causes
The high-output V8 faces ignition demands appropriate to its power level. Spark plug electrode wear occurs over normal operation but may accelerate under towing or hauling loads. Ignition coils must generate robust sparks for reliable combustion. Direct injection contributes to carbon accumulation. The truck's work capability means engine components may experience more stress than passenger vehicle applications.
Diagnostic Approach
Retrieve all codes and note freeze frame conditions—high-load data may indicate towing-related stress. Access cylinder 4 on the right bank. The full-size truck's engine bay typically provides reasonable component access. Test ignition coil output and spark plug condition. Verify fuel injector operation. Consider duty cycle in your wear assessment.
Repair Solutions
Install Nissan-specified spark plugs for the 5.6L V8. Replace ignition coils showing degraded output. Address fuel system concerns as identified. Trucks used for heavy towing may benefit from proactive maintenance scheduling.