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Re: oh is it the ...
Posted by Dean (more from Dean) on Thu, 22 Jan 2004 20:44:21
In Reply to: oh is it the ..., yadda_MTL, Thu, 22 Jan 2004 16:14:32
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same technology!
Things like the engine ground cable having resistance and the alterator current creates a ground shift for the O2 sensor. I found a gread deal of traffic on the internet for that fault code, from State emissions testing stats. It is a very common problem as a fault. What I posted was the only thing that I could find that addressed the problem in technical detail.
The ECU is changing the mixture rapidly all of the time, dancing with the #1 sensor's signal. As you can see from the link, the ECU expects to see the O2 sensor responding with signal variations. So low temeratures are an issue. So the enging T-stat is a concern, as well as the O2 senor heaters. if you have sensor voltage, also confirm that the heater in the sensor has a low resistance as well. Tehn sensor is seated well, but does the sensor base have a low resistance path to ground? Resistance at the turbine clamp?
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