What does code P0430 mean on a Audi and is it safe to drive?
P0430: Catalyst System Efficiency Below Threshold (Bank 2). Here's what it means on your Audi, 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 Audi
- 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 Audi, 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 Audi
Audi P0430 on V6 and V8 FSI engines requires the same diagnosis as P0420 on bank 2. Aftermarket converters often fail Audi's tight catalyst efficiency threshold quickly; OEM or high-quality direct-fit units are strongly recommended to avoid a repeat code.
Most commonly affected models
Q7 3.6/4.2 2007–2012A6 3.2 2005–2011A8 4.2 2004–2010