The 2022 Dodge Durango offers three-row SUV versatility with powerful engine choices from the efficient V6 to the mighty HEMI V8s. When your Durango displays P0304 indicating a cylinder 4 misfire, engine-specific diagnosis ensures accurate repair.
Understanding P0304 in Your Durango
Cylinder 4 location depends on engine configuration. In the 3.6L Pentastar V6, cylinder 4 is on the rear left bank. In HEMI V8 engines, cylinder 4 is on the right (passenger) bank. The powertrain control module monitors each cylinder through crankshaft position analysis.
HEMI-Specific Factors
The 5.7L HEMI uses Multi-Displacement System for fuel economy, which can cause misfires when lifters develop issues. The 6.4L HEMI in SRT models doesn't have MDS. All HEMI engines stress spark plugs due to high displacement and power output.
Diagnostic Steps
Identify your engine and access cylinder 4 ignition coil accordingly. Inspect spark plug condition—HEMI engines demand quality plugs. On 5.7L models, monitor whether misfires correlate with MDS activation.
Resolution Approach
Replace spark plugs with Mopar specifications appropriate for your engine. Test ignition coil output. Address any MDS concerns on 5.7L models. Verify proper oil specification for engines with MDS.