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Probably not the sensor Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Sun, 16 Dec 2007 13:35:33
In Reply to: OK to ignore O2 sensor for now?, Mike E, Sun, 16 Dec 2007 11:05:59 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The ECU flags a sensor fault if the sensor reading is out of range. The operating range of the O2 sensor is very narrow, so there are a lot of other faults that could be causing the problem, and they don't have a specific fault code. As an example, run too lean because of a vacuum leak, and you can get an O2 sensor fault.
It would be interesting to know which fault(s) were read - for example, P0130, P0132, P0133? Those can be a few things. P0135? Sensor heater issue - could be the sensor, could be the wiring.
I'd pull the spark plugs and look. Do they look a nice light grey, or do they show very rich (fluffly black) or lean (stark white)? Rich can be a bad FPR; lean is most likley a vacuum leak. Running very rich or very lean is bad for the engine - you'll see it in the spark plugs.
However; if the plugs look decent and the car runs OK, yes, you're fine running with this O2 sensor. The engine will default to a slightly richer mixture, so you might see a minor drop in gas mileage, and the emissions will increase - so global warming will happen that much sooner, and it's all your fault.
The CEL comes on for any emissions- related issue and other engine problems. Find out what the codes are, so you don't end up replacing a part unnecessarily and the problem persists. And look at the plugs - they'll tell you more than any fault code.
posted by 76.243.123...
, Mon, 17 Dec 2007 11:01:18, Sun, 16 Dec 2007 13:35:33 <-- Viewing This Message, Sun, 16 Dec 2007 15:09:03
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