FORD OBD1 CODES CODE 31

Okay, I Have A Really Annoying Problem That I Just Cannot Figure Out. I Have Been Getting Codes 31 And 22. We Took It Through Emissions And...

I Read The Codes And Got A Code 31 The Scanner Said 1.(Cars Only) Evap Or Pfe Circuit Below Minimum Voltage 2. (Trucks Only) Egr Valve...