What Does P0430 Mean on Your 2024 Hyundai Tucson?
Your 2024 Hyundai Tucson has set a P0430 code, indicating the catalytic converter on Bank 2 isn't meeting efficiency standards. The 2024 Tucson comes with a 2.5L naturally aspirated 4-cylinder engine (Smartstream) producing 187 horsepower, with hybrid and plug-in hybrid options available. On the inline-four engine, Bank 2 refers to the secondary catalyst monitoring position in the exhaust.
As a brand-new vehicle, this code is very likely a sensor or software issue. Hyundai's excellent warranty coverage means this should be a quick and free fix at the dealer.
Symptoms You May Notice
- Check engine light on
- Possible slight fuel economy decrease
- Faint sulfur smell
- Vehicle may seem slightly less responsive
- Emissions test failure
Common Causes of P0430 on the 2024 Tucson
- ECM software calibration — Software refinements for the current model year are the most likely fix.
- Defective downstream O2 sensor — A factory-defective sensor can falsely trigger the code.
- Exhaust assembly issue — A minor factory assembly issue.
- Catalytic converter manufacturing defect — Rare but possible.
How to Diagnose the Problem
- Have the dealer retrieve all DTCs
- Monitor O2 sensor data
- Check for Hyundai TSBs
- Inspect exhaust connections
- Verify ECM software version
Repair Options
- ECM software update: $0 under warranty.
- O2 sensor replacement: $120–$280. Warranty-covered.
- Exhaust repair: $80–$280. Warranty-covered.
- Catalytic converter: $600–$1,400. Warranty-covered.
Cost Breakdown
- All repairs: $0 under warranty
- Out-of-warranty: O2 sensor $120–$280, converter $600–$1,400
Your 2024 Tucson is covered under Hyundai's 5-year/60,000-mile bumper-to-bumper warranty and the federal emissions warranty (8 years/80,000 miles). All repairs should be free.
Prevention Tips
- Keep all scheduled service appointments
- Allow software updates during dealer visits
- Use quality fuel
- Report performance changes promptly
- Follow the recommended maintenance schedule