Check engine light came on when started in morning and trans won't shift out of first gear.Had codes P1762 & P1763. Bought new governor solenoid and pressure sensor and installed them. Codes didn't come back but still no shift. Put trans pressure guage into governor test port, have 0 psi at idle which is normal but have 0 at speed also. Chart says governor pressure solenoid or pressure sensor defective. I will take the pan back off and check them with the ohmeter and check for 5 volts at the connectors. Wouldn't be the first time I've bought new parts that were defective. Has anyone ran into this before?

 

I got the same results - I changed both governor pressure sensor and transducer - still won't shift. Haven't driven too far but far enough - engine light hasn't come back on.

I unplugged rear O2 sensor - still won't shift.
I'm going to check the electrical in the tow harness due to reading once someone had same problem and eventually found the short in the harness - the harness was shorting/melting above the gas tank.

 

Hi, i have the same p codes and at first my truck would no shift to first i would run in 2 then shift to 3rd and 4th and then all of a sudden the truck got stuck in first gear and wont shift to second or third or fourth, if i disconnect the transmission relay it stays n 3rd and if i drive it like that to get it to second i down shift. i really dont know what it can be, i am researching forums for clues. would like to know if you fixed your problem?

 

Drop the pan, see what you find. Pull the governor solenoid out, see if it isn't clogged.

 

Ok so i purchased the governor pressure sensor from ebay for 35 bucks rebuilt and got the transmission to shift properly!

PS. I purchased a 98 dodge ram quad cab 1500 5.9L v8 4X4 and did away with the 46RE and swapped in a NV3500.

 

Happy!!!