A P0302 code on your 2023 Jeep Gladiator indicates the engine control module has detected misfires in cylinder 2. The 2023 Gladiator offers the 3.6L Pentastar V6 with eTorque and the 3.0L EcoDiesel V6. Each powertrain has specific diagnostic considerations for effective misfire resolution.
Gladiator Powertrain Options
The 3.6L V6 provides 285 horsepower with port injection and eTorque mild hybrid assistance. The 3.0L EcoDiesel delivers 260 horsepower with excellent torque for towing. Both are V6 configurations with cylinder 2 on the rear bank.
Gasoline V6 Misfire Causes
The Pentastar's port injection provides clean operation without carbon buildup concerns. Ignition coil degradation, spark plug wear, and fuel injector issues are primary causes. The eTorque system adds electrical complexity but doesn't directly cause misfires.
Diesel V6 Specifics
The EcoDiesel's P0302 indicates fuel delivery or compression issues rather than ignition problems. Fuel injector failure, rail pressure problems, glow plug issues, or cylinder compression loss are typical causes. Diesel diagnosis requires specialized equipment.
Symptom Recognition
Both engine types display rough idle, vibration, and hesitation with misfires. The truck's towing and hauling capability suffers with reduced power. Check engine light accompanies the condition.
Diagnostic and Repair Strategy
Identify engine type. Scan for all codes including diesel-specific codes. Gasoline engines need ignition evaluation; diesels need fuel system diagnosis. Given the newer model year, warranty coverage should apply.