What Does P0430 Mean on Your 2022 Hyundai Tucson?
Your 2022 Hyundai Tucson has triggered a P0430 code, meaning the catalytic converter on Bank 2 isn't efficiently cleaning exhaust gases. The 2022 Tucson was a complete redesign, featuring a 2.5L naturally aspirated 4-cylinder (Smartstream) producing 187 horsepower, with hybrid and PHEV variants. On this inline-four, Bank 2 refers to the secondary catalyst monitoring position.
At 2-4 years old on a redesigned platform, the 2022 Tucson is most likely experiencing a sensor or software issue rather than genuine converter wear.
Symptoms You May Notice
- Check engine light on
- Slight fuel economy decrease
- Possible sulfur smell
- Minor hesitation during acceleration
- Emissions test failure
Common Causes of P0430 on the 2022 Tucson
- Faulty downstream O2 sensor — On a newer vehicle, this is a prime suspect.
- ECM software calibration — The redesigned 2022 platform may benefit from calibration updates.
- Exhaust leak — A minor connection or gasket issue.
- Catalytic converter defect — Manufacturing defects are uncommon but possible on first-year redesigns.
How to Diagnose the Problem
- Retrieve all DTCs
- Monitor O2 sensor data
- Check for Hyundai TSBs for the 2022 Tucson
- Inspect exhaust connections
- Verify ECM software version
Repair Options
- O2 sensor replacement: $120–$280.
- ECM software update: $0–$100.
- Exhaust repair: $80–$280.
- Catalytic converter: $600–$1,400.
Cost Breakdown
- Under warranty: $0
- Out-of-warranty: O2 sensor $120–$280, converter $600–$1,400
Your 2022 Tucson should be covered under Hyundai's 5-year/60,000-mile bumper-to-bumper warranty and the federal emissions warranty. Visit your dealer for a warranty-covered repair.
Prevention Tips
- Follow the recommended maintenance schedule
- Use quality fuel
- Allow dealer software updates
- Don't ignore check engine lights
- Keep up with oil changes