nycgps

iTrader: (1)

P0420 Catalyst system efficiency below threshold ON 2 Catalyst ´
(See DTC P0420 )

I got this CEL Around hmm yesterday ? and does that mean my Cat (Air Purifier) going to fail (or already failed)

Hmm , will this affect my 8's performance/stability/safety in any way ?

Thanks guys ! :-)

Go48

See the related page below from the shop manual for possible causes of this error code. Best to take it to a dealer and have it checked out. They will likely replace the cat. You may notice reduced performance if the cat is failing, but there is no safety concern.

TeamRX8

iTrader: (25)

the error cause list says nothing about a failed cat converter, I would clear the code and see if it reoccurs

nycgps

iTrader: (1)

I havent notice any decrease in performance yet.

Let me reset it and see if it pops back up ....