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Discussion Starter #1
I've been chasing SES lights for over a year now. Got the light to turn off for about 10 miles after the most recent 02 sensor, but its back on. As of yesterday, I have P0134, P0135, and P0155 codes. Tried about everything I could find from other threads, running out of ideas. You guys got any?

July: new MAF, new OEM O2 sensor (Bank 1 Sensor 1)
December: new cat converter.
January: new OEM 02 sensor (B2S1)
Over the last few months: vacuum leaks repaired, new air filter, multiple throttle body cleans, gas additives (lucas, cataclean, seafoam).
'99 S10 V6 2wd
 

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Hopefully you didn't ruin the engine with all that hokus pokus in bottles.
Those codes mean your O2 heaters aren't working. It's either the grounds on the BACK of both cylinder heads, a break in the wiring, or the O2 fuse in the under hood fuse box.
Can't seem to post a pic at the moment. It's located at the right lower corner of the starter relay just right of the center of the fuse box.
 

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Discussion Starter #4
Thanks for the reply. I've been waiting to check out what you suggested, because of course the dang SES light turned off shortly after I posted. Soon as it comes back on, I'll check.

- Will
 
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