What does code P0430 mean and is it safe to drive?
P0430: Catalyst System Efficiency Below Threshold (Bank 2). Here’s what it means, what usually causes it, what repairs typically cost, and how urgent it is to keep driving.
PowertrainGenerally safe to drive
Repair cost
$400–$2400
System
Powertrain
Urgency
medium
What this code means
Same as P0420 but for bank 2. The catalytic converter on bank 2 is not operating efficiently.
Common causes
- 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
Repairs for P0430 often fall between $400 and $2400, depending on the cause and your vehicle.