What P0430 Means on Your 2024 Jeep Cherokee
A P0430 code on your 2024 Jeep Cherokee means the Bank 2 catalytic converter isn't meeting its efficiency threshold. Note that the Cherokee was discontinued after 2023 in many markets, so if you have a 2024 model, it may be a late-production or market-specific variant typically carrying the 2.4L Tigershark inline-4 (180 hp) or the 3.2L Pentastar V6 (271 hp). Bank 2 on the V6 is the passenger side; on the inline-4, it refers to the secondary catalyst section.
For a late-model Cherokee, warranty coverage should handle most P0430 repairs.
Symptoms
- Check engine light on steady
- Slight decrease in fuel economy
- Possible faint sulfur exhaust odor
- Minor or no performance change
- Emissions test failure
Common Causes
- O2 Sensor Issue — Sensor defects or premature wear on the downstream Bank 2 sensor.
- Catalytic Converter Defect — A factory issue with the converter substrate.
- Exhaust Leak — Connection or gasket issues in the exhaust system.
- ECM Calibration — Software monitoring thresholds may need adjustment.
Diagnosis
- Dealer visit. Under warranty, the dealer should diagnose at no cost.
- TSB check. The dealer will look for applicable service bulletins.
- Factory diagnostics. Stellantis dealer tools provide the best data.
- Document all service. Important for warranty records.
Repair Costs
- Catalytic Converter: $850 - $2,000. Covered under warranty.
- Downstream O2 Sensor: $140 - $340. Also covered.
- ECM Update: $0 under warranty.
- Exhaust Repair: $100 - $400. Warranty-covered if factory-related.
Warranty coverage: Jeep's 3-year/36,000-mile basic warranty, 5-year/60,000-mile powertrain warranty, and federal emissions warranty (8 years/80,000 miles).
Dealer First
For a late-model Cherokee under warranty, let the dealer handle the diagnosis and repair. There's no benefit to DIY on a covered vehicle.
Prevention Tips
- Follow Jeep's maintenance schedule
- Use quality fuel from reputable stations
- Address any warning lights promptly
- If using the Cherokee for light towing, respect the rated capacity
- Keep up with recall and TSB notifications from Stellantis