Getting a P0430 (bank 2 sensor) and the odd one, P0571 (brake switch) but I only get these in tandem and only when I get below 1/4 tank and then refuel.
I could half believe the 0430 code alone but the other should not be connected.
Could it be my PCM acting up?

05 Ram 1500 Laramie QC 5.7L

 

Bump for ideas. Could these two codes just be a fluke repeating issue? I'm suspicious of my PCM going bonkers as I noticed my fuel guage is lying to me now as well. I either developed 3 distinct issues or a bad PCM. Anyone else have this problem?

 

Look underneath the Fusebox in the engine compartment. They are known to corrode and cause all sorts of odd electrical issue's.
It's a place to start.
You can check your brake switch by hitting the brakes multiple times obviously.
You can check your 02 sensors with multimeter when cold and again when warm. Your checking both the voltage at the connector and the rsistance of the sensor.

 

Thanks Dirtydog. It's a place to start!