What does code P0430 mean on a Toyota and is it safe to drive?
P0430: Catalyst System Efficiency Below Threshold (Bank 2). Here's what it means on your Toyota, 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 Toyota
- 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 Toyota, 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 Toyota
P0430 appears on Toyota V6 models alongside P0420. The 3MZ-FE and 2GR-FE engines are the primary candidates; diagnosis and repair mirror P0420 but target the bank 2 (passenger-side) catalyst.
Most commonly affected models
Camry V6 2002–2011Sienna 2004–2010RAV4 V6 2006–2012