A P0302 diagnostic code on your 2020 Dodge Challenger indicates that cylinder 2 is experiencing misfires detected by the engine management system. This legendary muscle car offers multiple engine options requiring specific diagnostic approaches.
2020 Challenger Engine Lineup
The 2020 Dodge Challenger featured engines ranging from the 3.6L Pentastar V6 to the supercharged 6.2L Hellcat and beyond. The 5.7L and 6.4L HEMI V8 engines include MDS cylinder deactivation, which can contribute to misfire conditions.
MDS-Related Misfires
Multi-Displacement System on HEMI engines deactivates cylinders during cruise conditions. Cylinder 2 is among the deactivatable cylinders. MDS lifters can fail, causing misfires specifically in the affected cylinder. Listen for valve train noise as an indicator.
Performance Driving Considerations
Challengers often experience spirited driving. High-RPM operation and drag racing stress ignition components significantly. Ensure spark plugs are properly gapped and of the correct heat range. Coil packs should deliver adequate energy for demanding conditions.
V6 Engine Analysis
The 3.6L Pentastar V6 base engine uses direct injection, which can contribute to carbon buildup on intake valves over time. These deposits affect airflow and can cause misfires. Ignition coil failures also occur on this engine.
Diagnostic Methodology
Start with ignition system inspection for all engines. Progress to fuel system testing and MDS analysis for HEMI V8s. Compression testing helps rule out mechanical issues affecting cylinder 2.