Gas Guage not working, and Engine Service Soon, light stays on

First, get engine code read and repost on here. Autozone or another parts place will usually read for free. It is possible the fuel gauge sending unit (gas tank float) has failed but get code read first.

BAK IS CORRRECT YOUR CODE MAY HAVE TO DO WITH FUEL LEVEL SENSOR WHICH WOULD MAKE FUEL GAUGE NON OP