Hi. I need help. I have a 2003 diamante. Last week I started my car and it was in limp mode. I got the car scanned and code p1751 came back. I replaced the transmission control relay yesterday and immediately the car drove perfectly. i drove the car last night and today. I parked my car after a short drive today when i got back in and started it up, I found it is in limp mode again. I haven't had a chance to get it scanned again. Any ideas what may be happening. Please help. Btw... I'm a mechanical idiot unfortunately.

 

Oh and in regards to my first post, my dash display obviously shows check engine. I dont know if it is supposed to but "tcl off" is also displayed, and intermittently the "brake" light will come on and off as i am driving. i believe that lights for the parking break but idk. I don't know if this might help anyone figure out my problem, but thought i shold add this info. thx