Quote:
Originally Posted by Doru
To Ricky Bobby: the whistle sound IS a vacuum leak. Just for schi*z & giggles, even if you said it looks OK, check again the big rubber boot at the Y. Check it thoroughly.
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I kept getting these OBD II codes that read, "oxygen sensor adaptation limit reached, Bank X" and thought I needed a new oxygen sensor.
Turned out to be the intake elbow, a $30 part from the online catalogs, which takes about 5 minutes to install. Just a couple of hose clamps.
The little Y that taps off this has a bellows, and sure enough, there was a leak in it, and air got in.
Apparently this confused the modic, which tries to "adapt" the oxygen sensor input, and when the limit is reached, sets of the CE light.
I did end up replacing the oxygen sensors 40,000 miles later, oddly enough, in response to a "Catalytic Converter Efficiency Below Threshold, Bank X" message.
Just because an OBD II code mentions a part by name, does not mean that part is the culprit!
Many dealer technicians fail to grasp this simple point.
05-19-2013, 02:39 PM
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