What does code P0430 mean on a Hyundai and is it safe to drive?
P0430: Catalyst System Efficiency Below Threshold (Bank 2). Here's what it means on your Hyundai, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
Same as P0420 but for bank 2. The catalytic converter on bank 2 is not operating efficiently.
Common causes for your Hyundai
- Failed catalytic converter (bank 2)
- Faulty O2 sensor(s)
- Exhaust leak
Symptoms
- Check Engine Light
- May fail emissions
Typical fixes
- Replace bank 2 catalytic converter
- Replace oxygen sensors
- Repair exhaust leaks
Repair cost range
For a Hyundai, repairs for P0430 often fall between $400 and $2400, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Hyundai
Hyundai Lambda V6 engines trigger P0430 at high mileage. The same oil consumption concerns that apply to P0420 on Theta-II 4-cylinder engines also apply here on V6 models.
Most commonly affected models
Sonata V6 2006–2010Santa Fe V6 2007–2012Azera 2006–2011