Thanks for the heads up Gelbster. Can faulty pre-cat O2 sensors cause P0410 and P1411 SAI codes? If so replacing the pre-cat O2 sensors is pretty easy and not costly. I’m not a fan of throwing money and parts at a vehicle to solve a problem but I received new work ramps as a gift recently and am itching to use them!
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Originally Posted by Gelbster
I feel your pain !
I would advise against using an Emulator until you have exhausted the legal options.
First do the basic diagnosis of the SAI sytem and components - especially for the O2 sensor performance pre cat. If you don't have a scan tool, this is a quick and cheap diagnostic to have done by a Tech. Without the voltage and wave pastern info pre-cat you can't really begin. And without that info - preferably a screenshot the smart guys here may be reluctant to join the conversation.
There are lots of obscure ,little 'fix-it' issues that may contribute to this problem. For example ,if your SAI system is perfect but the SAI ports in the cylinder heads are plugged you will never make any progress at extinguishing the CEL .
Once you have fixed the entire system and have no CEL, you then need the Drive Cycle to get the monitor "Ready"
For others note that the MY 2001 is particularly difficult to set the monitor as "Ready".
If your O2 sensors are old, maybe just replace all 4 with Bosch and at least ypu've done one of the easier jobs and eliminated it from the possibilities.
BUT , whatever you do PLEASE let us know what worked !That helps all who follow.
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