P0430 on Your 2023 Ford Bronco Sport
A P0430 code on the 2023 Ford Bronco Sport means the engine control module detected below-threshold catalytic converter efficiency on Bank 2. The 2023 Bronco Sport offers the 1.5L EcoBoost turbo three-cylinder (181 hp) or the 2.0L EcoBoost turbo four-cylinder (250 hp in Badlands and Outer Banks First Edition). The Bank 2 designation refers to the ECU's secondary catalyst monitor.
On a near-new compact SUV, converter failure is extremely unlikely. Sensor defects and software issues are the most probable causes, fully covered under warranty.
Symptoms You May Notice
- Check engine light on
- No major performance changes
- Possible slight fuel economy decrease
- Faint exhaust odor in rare cases
- Emissions test failure
Common Causes on the 2023 Bronco Sport
- Defective Downstream O2 Sensor — Factory sensor defects are the leading new-vehicle cause.
- Software Calibration Issue — A PCM update may resolve false catalyst codes.
- Exhaust Assembly Defect — An improperly sealed connection.
- Catalytic Converter Defect — Very rare.
Diagnosis and Repair
Take it to the dealer. Your 2023 Bronco Sport is under full warranty. Do not attempt repairs or clear the code.
Cost Breakdown
- Warranty Repair — Cost: $0.
- O2 Sensor (theoretical) — $120 to $295 total.
- ECU Reflash (theoretical) — $100 to $200.
- Catalytic Converter (theoretical) — $300 to $1,580 total.
DIY Feasibility
Not recommended under warranty. Let the dealer handle all repairs at no cost.
Prevention Tips
- Follow Ford's maintenance schedule
- Report warning lights promptly
- Use quality fuel for the EcoBoost engine
- Keep all service records
- Inspect exhaust after off-road use