turbo_Z

so like its says one of my O2 sensors is reading 999 on startup instead of 445 mV but the sensor still fluctuates like it should in closed loop. its not throwing any codes but im kinda curious if its reading accurately.. im gonna guess NO but i often guess wrong so what do you guys think?

97Z-M6

i programmd mine to stay in open loop. and while i was scanning it yesterday i noticed that the o2s were working on start up and whille it was running, even 10 min after i let it sit there and runn. the car stay in open loop, becuase i programed it to, but the 02s were still reading and never stoped. i dont think the pcm was using the values though.