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05-31-2015, 01:45 PM | #1 |
Lieutenant
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Drives: 2007 Z4M Coupe
Join Date: Feb 2011
Location: Tennessee
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O2 Sensor Data, can you tell me what this means?
Trying a different set of cats on my car and I'm getting a CEL. I can see where the problem is in the data but I don't know how to translate the data cause I'm not a mechanic. Or I'm just talking out my ass. Anyone know what it should properly read?
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06-01-2015, 07:23 PM | #2 |
My other car is on Mars
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I can read these off mine using my iPod.
I'll check them when I get home and let you know. Off the top of my head, they look about right.
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06-01-2015, 09:33 PM | #3 |
My other car is on Mars
636
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It looks like I'm running rich on a hot engine at idle.
S12, S22: 0.755 - 0.770 V (they bob around a little) I think they were both at 0.435 when I first started the car. S11, S21: 2.00 V (don't bob around much) S11, S21 mA: +/- 0.010 (they bob around also) IIRC, S12 and S22 are the pre-cat narrow band and should optimally be 0.450. S11 and S21 are the post cat wide band. The current should bob slightly around 0 as the DME adjusts it to maintain the voltage at 2.00 V.
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