How to read an oxygen sensor
02-05-02, 04:21 PM
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How to read an oxygen sensor
Hey guys, I pulled my O2 sensor out after 70K miles on it. The sensor was completely white except for a little black scar. What does it mean? Is my engine in good condition?
02-05-02, 05:12 PM
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I think the best way to tell is to get a digital meter and put one lead on ground and the other up the backside of the 02 sensor wire at the back of ECU. Then go for a drive and observe the meter. Just looking at it does no good. It could look like that and the wire having been broken for two years. Looks good though.
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