BlkMica_03
Member
- :
- Mazda, Protege 5
hey guys my check engine light come on the other day so i stopped at advanced and had the run it and i get code P0421 which is "The PCM has determined that the warm up catalyst efficiency for bank 1 is below threshold for the current engine operating conitions"
any ideas what this is and how to correct it???
thanks in advance guys
any ideas what this is and how to correct it???
thanks in advance guys