The P0304 code in your 2024 Jeep Grand Cherokee indicates the engine control module has detected persistent misfires in cylinder 4. The premium SUV offers multiple engine options, and identifying your specific configuration is essential for accurate diagnosis of this combustion problem.
Understanding P0304 in the 2024 Grand Cherokee
The 2024 Grand Cherokee features several engine choices: the 3.6L Pentastar V6, 5.7L V8, 2.0L turbocharged four-cylinder in 4xe hybrid, and the powerful Hurricane inline-six turbo in select models. Cylinder 4 location varies significantly by configuration—understanding your engine enables targeted diagnosis.
Engine-Specific Misfire Causes
The 3.6L V6 faces standard ignition wear patterns with cylinder 4 on the rear bank. The 5.7L V8 may have cylinder deactivation adding complexity. The 2.0L turbo in 4xe models experiences boosted ignition demands. The Hurricane inline-six presents yet another configuration. Each engine has unique diagnostic considerations.
Diagnostic Methodology
Identify your engine configuration precisely. Retrieve all codes including hybrid system faults for 4xe models. Locate cylinder 4 appropriate to your engine. Test ignition coil output and spark plug condition. Verify fuel injector operation. For V8 models, consider cylinder deactivation system inspection.
Repair Solutions
Install Jeep-specified spark plugs for your engine type. Replace degraded ignition coils. Address fuel system concerns. Hybrid models may require dealer expertise for complex powertrain integration issues.