Trouble Code

[jadecuir]

The engine light stayed on the other day. I pulled the efi fuse to reset the light. No light for three days. It came back on today. Checked the code, get #25, "Air-fuel ratio lean malfunction". Anyone know what would cause this? Car runs great! No idle problems at all. Is one of my Ox sensors failing?

[silvermate]

could be your O2 sensor.

[jadecuir]

could be your O2 sensor.

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That's what I suspect. Is it accessible from under the hood, or am I jacking the car up to get to it?

[silvermate]

they are back by the cats

[99lsguy]

yeah,

there are L & R sensors before you get to the Cats........put you car up on ramps and you can get to them........

Run a search on this........a lot of info out there...

[zigenfiver]

Check out Lexls's website for 02 sensors. www.lexls.com

[jadecuir]

Check out Lexls's website for 02 sensors.  www.lexls.com

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Thanks, I'll do dat.

[Lexls]

Yeah, #25 is usually a bad O2 sensor...but it could be a few other things. First, test the voltage on your main O2 sensors...the procedure is on my site ;) The O2 sensors don't last forever, you do need to replace them once in a while. My bet is that one or both of your main O2 sensors have gone out of spec.

[jadecuir]

Yeah, #25 is usually a bad O2 sensor...but it could be a few other things.  First, test the voltage on your main O2 sensors...the procedure is on my site ;)  The O2 sensors don't last forever, you do need to replace them once in a while.  My bet is that one or both of your main O2 sensors have gone out of spec.

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Thanks for all your tutorials! They are the greatest!

John