New here on this ID for I lost my password and emails but here we go....

Background: Car has been driving fine up till a week ago when the front driver speed sensor disabled my ABS, traction control, & lane assist. Got it narrowed down by obd2 code and will replace speed sensor this weekend. AFAIK, this isnt associated with the issue below but mentioned it just in case.

Issue: 2012 c250 with 104k miles died on me after work yesterday after getting gas. Car starts, no misfires, no codes other than the speed sensor which has been present now for 2 weeks with no drivability issues. In park, you can rev the engine, all electrical working, appears its a great car. You can put it in gear and move forward and in reverse at idle with zero issue (no engine lag or idle changes that would indicate anything is wrong). As soon as you give it gas to go forward, you can feel power start to transfer to the drive (maybe 200 rpms more), but something is telling it no, (theres a little clunk but i think thats just the disengage) and the engine goes back to idle. In reverse, pushing the gas does about the same without the additional 200 rpms (more or less like your just pushing on the gas and it gradually increases in speed but almost non existent) There hasn't been any slipping, smell, non shifts, grinding or clunking indicating failure.

Inconsistency: Ive run several OBD2 tests before when I was having the infamous limp mode, due to high pressure fuel pump and a bad coil pack. These issues were addressed 2 years ago with no issues or codes since. I had some standing water due to a sunroof leak (plugged drain) a few weeks ago thats been dried without issue. OBD2 is "test incomplete or dependent test failed for o2 sensors bank 1 sensor 1 & 2 right away without hesitation. I say this for maybe something became unplugged under the back seat which i took out and or corroded. I've been able to run these tests before and they would always come back as ok. There are no current engine codes or rough idle indicating an issue with the 02's. (see pics below, might be relivent but not sure)

What I need help with: Is diagnosing what could be causing the car to not want to accelerate when I press on the gas what is causing it to "nope" based off the current data. I am unsure of the fluid level within the transmission due to us having no access. Could this be a pcm box, sensor, fuse, 02's, reset, fluid, or something? and how can I test or check this working backwards?



Fail right away screen 1

Fail right away screen 2

Showing sensors working?

 

Any suggestions or things I can check?