Ok so my Ob2 plug in wasn't working so I changed the fuse and bam it worked I drove the car to set the monitors and they all set but three (EVAP, O2 sensor, and CAT) I took it to shops they said to keep driving it I drove it for a month now and two set ( O2, and CAT) but as soon as I turn the car off them two just reset and was not ready no more idk what else to do plz help

 

Year?
Make?
Model?

Any modifications?

Original ECU or replacement?

 

2000 Acura integra ls no mods original ecu the rest of the monitors set just not those ones or they'll set then just rest once the car is off

 

Which fuse?

You definitely have a wiring problem, likely due to somebody having modified the wiring for some purpose. You could also have a ground wire corroded or detached.