Need Help 2011 QX56 Running Rich (DTC P062B)

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Keketd

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My QX has been running rich for a while now and no one can figure it out. I'm had them replace multiple parts and am going no where with this. Fuel tims of positive and negative 25% are setting a DTC P062B and I can't figure out what the cause is. I've attached an image of what I captured using my Consult 3 that I just purchased to get an idea of the cause.

Consult 3

Any ideas? I'm guessing it's either a bad module or a bad harness (CAN) connection somewhere on the line. Any directions would be greatly appreciated.
 
didn't look at your image but that code can mean a faulty injector, faulty harness or a fault in the ECM.
 
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I've had the battery, battery connectors, PCV valves, Air and Fuel sensors, Injectors, ECU and MAF sensor replaced. Thats all that I can remember from the top of my head.
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you had the ECM and ALL injectors replaced? well the only things you have not changed are the wire harnesses, and o2 sensors, unless i missed that...
 
I believe there was another forum member who had the same issue and posted about it within the last year, maybe two.
Thru the dealership’s recommendation, went ahead with replacing the ECU and harness and spent thousands of dollars to do so, only for the problem to return.
Any chance you can post the freeze frame data when the DTC triggers?
 
The first thing that caught my eye were the MAF readings. Whether at idle or when your truck was running, the #s are ridiculously high. At idle, its showed 2.46 lb/min. When converted to g/s, its around 18.5 g/s. Its supposed to be only 2.0-6.0 g/s @ idle and 7.0-20.0 g/s @ 2500 rpms.
The same can be said with the data with the positive LTFTs. I’d check the pigtail/harness for the MAF sensor first. Look for any short(s), exposed wire(s) and bent pins.
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