The P0302 trouble code on your 2018 Ram 1500 indicates that cylinder 2 is experiencing misfires detected by the engine control module. The 2018 Ram 1500 marked the final year of the fourth generation, offering the 5.7L Hemi V8, 3.6L Pentastar V6, or 3.0L EcoDiesel. At typical 2018 mileage, age-related factors may contribute.
Fourth-Generation Final Year
The 2018 Ram 1500 offered proven powertrains before the 2019 redesign. The Hemi produces 395 horsepower with MDS. The Pentastar V6 delivers 305 horsepower. The EcoDiesel provides diesel efficiency. Each has accumulated meaningful mileage.
Age-Related Considerations
By 2018 mileage, components may be approaching or past service intervals. MDS lifter issues become more common with age. Ignition components wear over time. Comprehensive diagnosis should consider age-related factors.
Common Misfire Causes
MDS lifter failure is common on higher-mileage Hemis. Ignition coil and spark plug wear affects all gasoline engines. The Pentastar V6 can develop vacuum leaks. Diesel injector issues cause misfires on EcoDiesel.
Symptom Recognition
The full-size truck displays rough idle, vibration, and hesitation with misfires. Towing and hauling capability suffers. Check engine light accompanies the condition.
Repair Solutions
Replace spark plugs and coils as needed. MDS lifter issues may require significant repair. Diesel injector service addresses EcoDiesel misfires. Address vacuum leaks on V6 models.