P013A Issue, RPMs Off, Water in Passenger Side Floorboard

Hey everyone,

I first want to preface that I have a 2020 TRD Off-road 2WD 3.5L V6 AT.

I had an issue arise after changing my coolant and taking my truck to a mechanic to check out a noise that only happened when I idled (because it's the only time I could hear it). They determined that I was missing a mounting bracket/screws that were holding my engine in place (so every time I idled and revved up, my engine kept going up and down in my engine bay). After that got fixed and I switched my coolant, I noticed a P013A code popped up on my OBDll. That code is the "rich to lean, bank 1 sensor 2, slow to respond" code. After cleaning my throttle, MAF sensor, and changing the O2 sensor, it popped back up after I cleared it. I also notice that my RPMs are off, or at least that's what my odometer shows. My odometer never goes below 0.5rpm on the dash.

I noticed previous forums had posted similar discussions on this topic, but I've already replaced my bank 1, sensor 2, O2 sensor, and a couple of years ago, I had my CATs replaced (dude hit me at a red light). Today, I'm going to use a multimeter to test connections, but I wanted to see what you guys recommend as far as next steps, or if you dealt with this issue, what you thought was helpful to fix the issue, etc.

Lastly, not sure if it is related, but I noticed I get water in my passenger side floorboard a lot, especially when it rains. Any suggestions on what that means or if it's related?

Thanks in advance for the help!

 

It's looking for B1S2 to drop below 0.2V within a certain period of time during a fuel cut, if that doesn't happen P013A sets.

Need to graph your AFR & O2 sensors and see what they are doing but it sounds like an issue with the sensor or sensor circuit.