My 98 dodge ram 2500....46re trans....is giving me a P0Fault code P0753 is a fault code that sets when there is a problem with the o/d solenoid or circuit. ... I was told by AAMCO that the p0753 is a shift change solenoid/3-4 trans solenoid. the p01765 is the other code.

I have a scanner that says my O/D switch is pressed too long. So I ohmed it out from PCM through the switch and it is not pressed. What can we do to turn off the O/D switch? Also the O/D Off light in the instrument cluster does not light up and we have already changed the bulb...so how do I fix that?

thanks

 

P0753 Trans 3-4 Shift Solenoid/Trans Relay Circuits
P1765 Trans 12 Volt Supply Relay Control Circuit (42RE, 46RE, 47RE)

I would figure out what's causing the 1765(bad relay?) first. It may be why you are getting the 753.