2012 Honda Accord coupe V6, 110k miles.
CEL came on today. Code P0430 (catalytic system efficiency bellow threshold Bank 2).
I understand this is the O2 sensor downstream detecting that the cat converter isn’t working properly.
Replace O2 sensor(s). Exhaust leak?
Use cat converter cleaner?
I guess if those don’t work replace cat converter.
Otherwise no problems with the car.
I had the car in the dealership for an airbag inflator replacement recall yesterday, but I don’t see that that is related.
Luckily it passed the emissions inspection (NJ) a couple of weeks ago.