Rockin S2K

So after doing some reading I understand the 2nd O2 sensor in the cat is probably faulty. What would be the symptoms with a bad secondary 02 sensor? Thank you.

noodels

None really apart from the cell code
although the learning has been deleted/over run too factory ecu setting
pull fuse and see if it comes back.
mine came on again this evening due to atmospherics changes here in uk..
am wanting wideband like later AP2 have,& to see if it helps,
have a Berk HFC 63mm

Rockin S2K

Thank you for your reply. What do you mean by the wideband that the later AP2 has?

noodels

Thought I read it somewhere that drive by wire throttle body S2000s had wideband, like modern cars