Fuel pump?

Is there any sort of indication that the fuel pump is going out or perhaps, clogged?
I have 38G fuel tank and usually, I get about 500 miles, give and take 20, if I run it to light on and the "miles to empty" would show "refuel". Usually I refuel when I have maybe 10-20 miles, depending where I am and how far/close I am to the next gas station.

But lately, I would be lucky if I can top out around 400 miles, maybe 420 miles before I start feeling uneasy about having to refuel.
I also remember reading on here that someone had issue with fuel pump and was causing other errors? I had a front collision error and auto head light error, but I can't seem to make the connection between the two/three....