How do you know when your o2s are shot

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May 1, 2007 | 07:45 PM

SS3520

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From: Music City

How do you know when your o2s are shot

I am guessing mine are... I get no readings from them at all on efilive. LTFT are all zero. Why I ask is that I have no ses light and no DTCs. I would have thought if they were dead it I would see that little warning on the dash. Anyone else have this happen?

May 1, 2007 | 09:16 PM

Rob98LS1

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From: Sacramento

My ses light is on because they failed, they should of for yours also.

May 2, 2007 | 01:06 AM

staringback05

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simple.....car will have an off idle, car will run lean or rich, car may throw a code

May 2, 2007 | 02:03 AM

orangeapeel

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From: Justin, TX

There is a heating code that it will show. If you have your car hooked up to a GM Tech II tool they can even tell you if they are reading really lazy or completely shot.

May 2, 2007 | 02:11 AM

staringback05

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if the o2 gets lazy....just slap it around and put it on a jenny craig diet....damn o2's have a tendancy to get fat and lazy and become o3's

May 2, 2007 | 02:19 AM

orangeapeel

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From: Justin, TX

^^^^^^^^^^

LOL

May 2, 2007 | 11:25 PM

Bader-X

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From: Kuwait

went to replace the ones I have (just to be sure they`re ok before tuning)

found out that only the front right side is connected?!and the front left is missing a connection between the harness and the sensor ,made me really sad and angry but I shoud`ve checked the car myself before buying and not letting my freind go .....

the shop that inspected it didn`t tell me only one is working we all assumed that the O2 code was because of deleted back sensors (LT headers) ... and I have the ses because of few things including some code about O2 sensor don`t remember .