I have a 2001 civic ex and its a automatic

i had the check engine light on and and it read both o2 sensors were bad
so i replace both before and on catalic converter

the one on the Cat does show anymore so its fine

but the one righ after manifold it still says malfunction

i just got another one and still Check engine

please help me

 

what is the exact code that its has? it could be a bad catalic converter

 

Could be a crack in the manifold maybe? Possible loose and/or corroded connection at the front o2 sensor?

Also, please try and post in the correct section. MOving to Mechanical Problems & Technical Chat

 

Its not a cracked manifold and not a catalic i forgot code
but it says oxygen sensor bank 1 sensor 1

 

Post the exact codes.