P0430 on Your 2024 Jeep Gladiator: What It Means
A P0430 code on your 2024 Jeep Gladiator indicates the Bank 2 catalytic converter on the 3.6L Pentastar V6 (285 hp) is operating below its efficiency threshold. Bank 2 is the passenger side of the V6, and the downstream O2 sensor has flagged the converter's performance.
On a brand-new 2024 model, this is almost certainly a warranty issue. Jeep should diagnose and repair this at no cost.
Symptoms
- Check engine light on (steady)
- Slight fuel economy decrease possible
- Faint exhaust odor in some cases
- No significant performance changes
- Would fail emissions test
Why Your New Gladiator Has This Code
- O2 Sensor Defect — Manufacturing defects in the Bank 2 downstream sensor can trigger false readings.
- Catalytic Converter Factory Issue — A below-spec converter from production.
- ECM Software Calibration — A software update may resolve overly sensitive monitoring thresholds.
- Off-Road Damage (if applicable) — If the Gladiator has already been on trails, exhaust damage is possible.
Diagnostic Steps
- Dealer visit. For a 2024 model under warranty, start and end at the dealer.
- TSB check. Stellantis may have issued bulletins for this code on the Gladiator.
- Damage assessment. If the truck has been off-road, the dealer will determine whether the issue is from damage or a defect.
- Keep all documentation. Important for warranty continuity.
Repair Costs (If Not Covered)
- Catalytic Converter (Bank 2): $1,000 - $2,400. Should be warranty-covered.
- O2 Sensor (Bank 2): $150 - $380. Also warranty-covered.
- ECM Update: $0 under warranty.
- Exhaust Repair: $100 - $500 if damage-related.
Full warranty: Jeep's 3-year/36,000-mile basic, 5-year/60,000-mile powertrain, and federal emissions warranty (8 years/80,000 miles).
Dealer Is the Move
On a brand-new Gladiator, let the dealer handle everything. Self-repair is inadvisable on a warranty-covered vehicle.
Prevention Tips
- Install exhaust skid plates before off-roading
- Inspect exhaust components after trail runs
- Follow Jeep's maintenance schedule
- Use quality fuel for the Pentastar V6
- Register with Stellantis for recall and TSB notifications