The 2020 Dodge Durango three-row SUV offers the 3.6-liter Pentastar V6 and available 5.7-liter and 6.4-liter Hemi V8 engines. All configurations include cylinder 5 as a legitimate position. A P0305 diagnostic trouble code indicates the engine management system has detected a misfire at this cylinder.
Understanding P0305 on Durango Engines
The P0305 code signifies "Cylinder 5 Misfire Detected." On all Durango engines, cylinder 5 is on the driver's side (left bank). The V6 produces 293 horsepower while V8 options provide 360-475 horsepower depending on variant.
Pentastar V6 Diagnosis
The 3.6L Pentastar is the standard engine offering good efficiency for the three-row SUV. Cylinder 5 misfires commonly result from ignition coil failure, spark plug wear, fuel injector issues, or on direct injection variants, carbon buildup on intake valves.
Hemi V8 with MDS
Both the 5.7L and 6.4L Hemi in the Durango feature Multi-Displacement System (MDS) cylinder deactivation. While cylinder 5 doesn't deactivate, MDS lifter issues can affect engine performance and potentially contribute to misfires on adjacent cylinders.
Towing Considerations
The Durango is often used for towing, which increases engine stress. Heavy trailer loads accelerate wear on ignition components. If your Durango tows frequently, more frequent ignition system maintenance may be warranted.