The P0303 code in your 2022 Jeep Grand Cherokee indicates the engine control module has identified cylinder 3 as experiencing misfires beyond acceptable limits. The fifth-generation Grand Cherokee (WL) debuted in 2022 with the 3.6L Pentastar V6, 5.7L Hemi V8, and 4xe plug-in hybrid options. Understanding your engine configuration ensures accurate diagnosis.
Cylinder 3 Configuration by Engine
Engine type determines cylinder 3's location. V6 and V8 engines position cylinder 3 on one bank of the V-configuration. The 4xe's inline four-cylinder places cylinder 3 third from the front.
Fifth-Generation Platform
The 2022 Grand Cherokee introduced the new WL platform with available three-row seating (Grand Cherokee L). The powertrain options carry over from the previous generation but benefit from refined calibrations.
Common P0303 Causes at Two to Three Years
At this relatively young age, most misfires stem from ignition component issues or fuel quality problems. Manufacturing variations cause early failure. Contaminated fuel affects combustion. Software updates may improve operation.
Hemi V8 MDS Considerations
The 5.7L Hemi features Multi-Displacement System (MDS) that can deactivate four cylinders. While cylinder 3 may not be a deactivation cylinder, MDS system issues can affect overall engine operation.