catalytic efficiency error chime

[phasselle]

My '06 as 400,000 miles and the P0420 and 430 started going off. The error does not bother me but the chime is annoying. When i reset the code it naturally just comes back. Anyway to ignore that code or silence the chime?

 

[Atcer2018]

I don’t know how to silence the chime but congratulations on that mileage. Quite impressive.

 

[rzr6-4]

Cats might be getting clogged given your high miles. Maybe try some of the fuel additive for cleaning cats. IDK if that stuff really helps but worth a shot. New sensors and cats are more expensive from there.