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post #1 of 7 (permalink) Old 10-20-2008, 08:02 PM Thread Starter
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CEL for lean exhaust

my 06 2.2 with no engine mods or exhaust or anthing...threw a CEL that said lean exhaust code (dont have the actual # as i was at work and had a buddy run it to autozone to read it for free) any idea where to start? maybe the cat or a possible exhaust leak somewhere? i have no clue
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post #2 of 7 (permalink) Old 10-20-2008, 08:40 PM
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Don't make it a big concern unless it's reoccurring. A one-time CEL could be a "fluke". Need the DTC number to even offer a shot-in-the-dark diagnoses. Did Autozone clear the CEL/code and did it come back?

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post #3 of 7 (permalink) Old 10-21-2008, 01:24 AM
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Could be one of many things, could be the downflow O2 sensor in the fritz, could be the Cat, could be a leak in between the downflow and upstream O2 sensors(usually accomodated with a slight audible note change), could be absolutely anything......those are just a few possibilities, could be a computer error or a one-time glitch like cars have???

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post #4 of 7 (permalink) Old 10-21-2008, 04:58 AM Thread Starter
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thanks for the responses guys....yes autozone cleared the code and my friend forgot to ask for the code itself. the tech retrieved it and told him what it meant. the car hasnt been affected as far as performance is concerned so i wasnt too worried about it. if it pops up again i will be sure to get the actual code and go from there
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post #5 of 7 (permalink) Old 10-21-2008, 05:25 AM
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Don't forget the MAF sensor, could be a remote possibility. The sensor determines how much fuel to use to maintain an AFR of 14.7. If it is dirty and thinks less air is passing through your AFR will be lean. Just in case you get a reoccuring CEL...

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post #6 of 7 (permalink) Old 10-31-2008, 02:45 AM
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I had the same thing happen. Took it to my dealer since its still under warrenty. They said it said it was the purge solenoid valve. They replaced it and the code hasn't come up since.
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post #7 of 7 (permalink) Old 10-31-2008, 06:47 AM Thread Starter
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ok, cool. the code hasnt popped up since they cleared it at autozone. if it does im taking it to the dealer since mine is covered to 100k and have them look at it
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