The P0304 code in your 2024 Ford Ranger indicates the engine control module has detected persistent cylinder 4 misfires. This next-generation Ranger features the refined 2.3L EcoBoost engine on an all-new platform, requiring updated diagnostic approaches while applying proven turbocharged engine principles.
Understanding P0304 in the 2024 Ford Ranger
The redesigned 2024 Ranger builds on the T6.2 platform with an upgraded 2.3L EcoBoost producing 270 horsepower. The turbocharged four-cylinder maintains its inline configuration with cylinder 4 positioned at the rear. Ford's latest engine management software provides enhanced misfire detection sensitivity, potentially catching developing issues earlier than previous generations.
Misfire Sources in the New Ranger
Despite platform updates, the fundamental misfire causes remain consistent with turbocharged direct injection engines. Ignition components face elevated electrical demands from boosted cylinder pressures. Direct injection creates favorable conditions for intake valve carbon accumulation over time. High-pressure fuel system precision remains critical for proper combustion. Engine breathing issues from restricted air filtration affect all cylinders but may manifest initially in the thermally stressed rear cylinder.
Modern Diagnostic Techniques
Access the comprehensive diagnostic system using a Ford-compatible scanner to retrieve detailed fault information including misfire counter data per cylinder. The 2024 Ranger's advanced monitoring provides more granular information than previous models. Physical inspection includes ignition coil connector integrity, spark plug condition, and fuel injector wiring verification. The updated engine bay layout may improve cylinder 4 accessibility compared to the previous generation.
Repair Solutions
Use only factory-specified spark plugs designed for the updated 2.3L EcoBoost calibration. Ignition coil replacement follows standard procedures with attention to connector lock engagement. The updated fuel injection system may have different service procedures than earlier Rangers—consult current service information. New vehicle warranty coverage should be verified before performing major repairs.