Bradleybiglift

I have a 2007 Toyota Kluger it keeps bringing up P2197 code for the oxygen sensor stuck lean,air/fuel mixture system to lean bank 1 and 2.I have replaced both oxygen sensors with aftermarket ones(don’t know if aftermarket is the problem). I reset the codes and it’s good for awhile then comes back but sometimes it just disappears buy itself then comes back at a loss of what to do?

thanks mate

I have a 2007 Toyota Kluger and have replaced the a/f sensor and have disconnected the battery to reset everything,took the car for a drive and it was all good but then after driving for about 50 to 100 ks the vsc and check engine light comes back on,have done this a few times now,can anyone tell me what’s going on now