Allison 6sp: changed harness, ran fine, now lots of codes

[6speedduramax]

My truck kept going into limp mode, I was told to try changing the internal harness. I changed it yesterday, put all new fluid in it. Ran fine no codes, drove it a couple hours last night with no codes or issues, and now today it's going in limp mode again and throwing all these codes.
P0761
P0843
P0877
P0751
P0756
P0873

Any ideas?

 

[Mike L.]

Something is disconnected.

 

[6speedduramax]

Like one of the connections on the new harness? I was wondering if maybe I didn't get the filter back in correctly.. does it just push in a little bit and hang there?

 

[6speedduramax]

Pulled the pan, filter was good, connections all seemed good.
Was told to test the pressure switch.
Term A goes to LO
Term B goes to DR
Term C goes to REV
Term D goes to REL and All the commons on all 4 of the sensors
Term E goes to nothing
Term F goes to nothing