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<blockquote data-quote="jgarlock" data-source="post: 19701" data-attributes="member: 6899">Hello, My wife has a 2011 equinox with the 2.4l. When this code first popped up I found that the exhaust manifold was cracked nearly in half. I replaced it, the gaskets, and the upper O2 sensor while I was there. Following that it popped back up, I know these are known to burn oil like crazy so I pulled the cat, and of course it was clogged. I just replaced the cat and gaskets, and cleaned the lower O2 sensor which didn't look too bad overall. However the code has popped back up again. Now I would just go straight to replacing the lower O2 sensor, however, the OBD2 readouts I am getting do not show&nbsp; anything of concern. The Catalytic efficiency is the only one that is off, below are the readings for both the secondary sensor and the catalyst monitor bank 1. Catalyst Monitor Bank 1TID $A0 - Min- .3498&nbsp; &nbsp;&nbsp; Value- .3453&nbsp; &nbsp;&nbsp; Max 3.9998 O2 sensor (I will have to update these, the screenshot I took apparently doesn't show all the readings on this, will update this afternoon with remaining) TID $8C - Min- 0&nbsp;&nbsp; Value - 0.0594&nbsp;&nbsp; Max - 0.1001TID $91 - Min- 0&nbsp;&nbsp; Value - 0.4188&nbsp;&nbsp; Max - 0.4504 TID $92 - Min .3003&nbsp;&nbsp; Value - 0.3162&nbsp; Max - 2.0505TID $93 - Min - 0&nbsp; Value - 0.43&nbsp; Max - 8TID $94 - Min - 0&nbsp; Value - 0.48&nbsp; Max - 8 If I remember correctly, the rest of the values were exactly where they should have been. The last three values concern me, having Values of .31 out of a max of 2, and values of .43/.48 out of 8/8 seem quite low, and I am wondering if those combined could be the reasoning for the catalyst monitor being slightly lower than the minimum value, However I have no idea what these TID's are... Any recommendations?</blockquote>

[QUOTE="jgarlock, post: 19701, member: 6899"] Hello, My wife has a 2011 equinox with the 2.4l. When this code first popped up I found that the exhaust manifold was cracked nearly in half. I replaced it, the gaskets, and the upper O2 sensor while I was there. Following that it popped back up, I know these are known to burn oil like crazy so I pulled the cat, and of course it was clogged. I just replaced the cat and gaskets, and cleaned the lower O2 sensor which didn't look too bad overall. However the code has popped back up again. Now I would just go straight to replacing the lower O2 sensor, however, the OBD2 readouts I am getting do not show anything of concern. The Catalytic efficiency is the only one that is off, below are the readings for both the secondary sensor and the catalyst monitor bank 1. Catalyst Monitor Bank 1 TID $A0 - Min- .3498 Value- .3453 Max 3.9998 O2 sensor (I will have to update these, the screenshot I took apparently doesn't show all the readings on this, will update this afternoon with remaining) TID $8C - Min- 0 Value - 0.0594 Max - 0.1001 TID $91 - Min- 0 Value - 0.4188 Max - 0.4504 TID $92 - Min .3003 Value - 0.3162 Max - 2.0505 TID $93 - Min - 0 Value - 0.43 Max - 8 TID $94 - Min - 0 Value - 0.48 Max - 8 If I remember correctly, the rest of the values were exactly where they should have been. The last three values concern me, having Values of .31 out of a max of 2, and values of .43/.48 out of 8/8 seem quite low, and I am wondering if those combined could be the reasoning for the catalyst monitor being slightly lower than the minimum value, However I have no idea what these TID's are... Any recommendations? [/QUOTE]

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