A P0302 diagnostic code on your 2020 Dodge Charger indicates that cylinder 2 is experiencing misfires detected by the powertrain control module. The Charger's range of powerful engines each require specific diagnostic approaches.
2020 Charger Engine Options
The 2020 Dodge Charger offered several engines: the 3.6L Pentastar V6, 5.7L HEMI V8, 6.4L HEMI V8, and the supercharged 6.2L Hellcat. Identifying your engine is the first step in accurate P0302 diagnosis.
Pentastar V6 Analysis
The 3.6L Pentastar V6 is known for reliability but can develop specific issues. Carbon buildup on intake valves affects some engines, and ignition coil failures occur. Cylinder 2 is accessible on the front bank of this V6.
HEMI V8 Considerations
The 5.7L and 6.4L HEMI engines feature MDS (Multi-Displacement System) cylinder deactivation. Cylinder 2 can be deactivated to save fuel. MDS-related lifter or solenoid issues can cause misfires specifically in deactivatable cylinders.
Performance Engine Focus
High-performance engines like the Hellcat experience extreme operating conditions. Supercharger boost pressure, high RPM operation, and significant heat loads can stress ignition components. Quality spark plugs rated for the application are essential.
Ignition System Priority
All Charger engines use coil-on-plug ignition systems. Begin diagnosis by testing the cylinder 2 ignition coil and inspecting the spark plug. Swap testing with an adjacent cylinder helps isolate the faulty component.