transmission range sensor circuit?
 

soo um, wtf is a transmission range sensor circuit?
i cant find ne info about it newhere, an asked a couple auto techs an they didnt no what it was

i keep geetin that code an its gone awaya n come back a couple times, it doesnt affect vehicle performance at all, the idle does stray at time but only like 250 rpm at max, so im not sure if that has nething to do with it, also my speedometer sticks at 44 mph sumtimes i dunno if that has nething to do with it, i dont think so cuz if i press the tripmeter or hit the dash above it it goes back to the right speed

thanks for ne info!