Help - Limp Mode!

[0medo]

I was on my way out of town, doing about 50, when my truck decided to drop into 4th and stay there. Thought I had accidentally hit the button, but nothing I did helped.

Had my codes read and came up with a slew of transmission-related codes: P0750 P0882 P0846 P0871 P0988 P0876
It's a 2012 Ram 1500 Express, with the 5.7L and 65RFE, 2WD with about 80k on the clock.

So, where do I start? I can't really afford to have a shop do this for me.

 

[WY-Dave]

Here is alist of codes https://www.glacierdieselpower.com/files/Dodge-Trouble-Codes.pdf

or enter coder https://repairpal.com/obd-ii-code-chart


P0750 Shift Solenoid "A"
[URL='https://repairpal.com/obd-ii-code-p0882-tcm-power-input-signal-low']P0882 TCM Power Input Signal Low[/URL]
P0846 Transmission Fluid Pressure Sensor/Switch "B" Circuit
P0871 Transmission Fluid Pressure Sensor/Switch "C" Circuit
P0988 Transmission Fluid Pressure Sensor/Switch "E" Circuit
P0876 Transmission Fluid Pressure Sensor/Switch "D" Circuit

Autotrans is a mystery to me, this is about as much help as I can be. Call up Midas or Menike explain these codes and it might be a "common" issue

 

[0medo]

Here is alist of codes

I do have the code definitions on hand, but unsure what could cause them all together. My best (very poorly informed) theory thus far is that P0882 is the king of this stack, but I haven't been able to find anything definitive on chasing that one.