o2 causing ses light
03-20-2009, 11:00 PM
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o2 causing ses light i tried a thread in newbie with no response. I have a 99z with full exhaust and i had the car tuned and he deleted the emitions causing the light along with the rear o2s and the car was fine for a couple weeks then the light came back on so i checked and it was the o2 sensor heaters bank 1 and 2 i reset them and they came back the next day so i swapped out the sensors for the rears i had from the header swap and shut off the codes again and the next day the light came back. I cant think that i had 4 o2 failers in week but i dont know anything about computers so please help..thanks Brian
03-24-2009, 09:48 PM
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i did some reserch and found that the computer sends out a signal to the o2 on cold starts to heat up and after the o2 does not heat up 3 times in a row it turns on the light the question i have is why does it heat up and can the heat up cycle be tuned out???