The SES light on my 99 Camaro SS came on yesterday, and I pulled the code with Autotap. I am getting code P1135- "HO2S LEAN MEAN BANK 1 SENSOR 1." This means I am running too lean, right? Then why aren't my STRIMS or LTRIMS maxed out? They all look fairly normal- single-digit values. Anybody know what is going on here? <img src="images/icons/confused.gif" border="0">

 

I must be dyslexic- it was code P1153. <img src="graemlins/gr_judge.gif" border="0" alt="[judgement]" />
"H02S INSUFFICIENT SWITCHING BANK 2 SENSOR 1". Does this mean I have a bad O2 sensor? The car only has 18,000 miles on it.

 

Assuming the wiring and connector are in good shape I would say, yes.

 

Thanks, Dave. I am taking it into the dealer on Friday- if it needs an O2 sensor, I should be able to get it replaced under warranty- unless they give me a lot of crap about my mods. I haven't installed my Grotts yet, so I don't see how any of my mods would have affected the O2 sensors.