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Old 11-02-2004, 09:50 AM   #16
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Member#: 17439
Join Date: Apr 2002
Chapter/Region: Tri-State
Location: Yardley, PA
2002 x2 Silver WRX
Sedan, White WRX Wagon


Originally Posted by tjamz
I first got this CEL shortly after a trip to the dyno. During the dyno runs they hooked up the WB O2 sensor in the front stock O2 sensors location. Is it possible that I am getting this code due to a leak? I have tried resetting the ECU, deleting the code, etc... but it always comes back, usually at idle. Any thoughts on this?
Was ANYTHING else done on the dyno AT ALL? When it comes back, is it at idle right after you turn the car on? Do you drive for a bit and THEN does it come on? Give a little more detail. Likewise, who tuned your car? Is there a chance your car is running way too lean and the code is truly telling you something that's "accurate"?

It's also possible the uninstall/reinstall damaged the o2 sensor. LOTS of possibilities, but you are on the right track focusing FIRST on "OK - what changed most recently?" And go from there. Did they mess with your airbox when on the dyno? Possibly bumped something or a clip? etc...
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