Yes it could be.
I would also check the TPS too, you can do that by jumping red/white to black/white in the white diagnostic plug under the back seat.
_C00 means TPS is not correct/too low.
-C00 means it is correct, and the dash on the left should go to the top when you rev it, and fall back to center at idle.
And of course any numbers other than 00 after the "C" indicate a code present, which the 99 fuel pump should not have/no code for it if it fails.