Issues with the codes P0732, P0756

[javis]

Hello Guys, I need your help. I recently had to replace the main rear seal on my father's 96 Ranger 3.0.

When doing the work, we decided to replace the transmission hydraulic fluid and filter. We used Merkon V fluid from Walmart and Duralast filter and gasket. The old fluid did not smell burnt, and had the normal clutch dust.

Once the work was finished, the reverse began to feel clunky, and gear 2 did not work, the O.D light flashed, which is why I got the codes P0732 and P0756.

I don't know what transmission model (4r44e, 5r44e) mine is, because maybe the previous owner replaced it, as well as the engine. I plan to replace solenoid B, or the valve body. Are the solenoids and valve bodies interchangeable between the 4r44e, 5r44e models?

I hope you can help me with my problem, and I thank you in advance for your advice and suggestions.

 

[RonD]

P0732 Gear 2 Incorrect ratio
P0756 Shift Solenoid B Performance or Stuck Off

1996 Ranger 3.0l used a 4R44E
5R44E is the same transmission internally just had 2 extra sensors added to the outside, ISS and OSS sensors
5R44E main difference is the engine computers software

Yes, both used the same valve body and solenoids

I would first test the wiring before dropping the pan
Unplug the 16 pin connector on driver side just in front of the shifter

Then print this:

Use OHM meter on pin 10 and pin 14, solenoid B(SSB), should see 22 to 48 ohms if its OK

If it tests OK then look at the pin 14 wire on the truck side plug, see if it got pushed out or back so can't make good contact

If pin 10 was the issue all 4 solenoids would set codes

You can test SSA, SSC and SSD just to make sure OHM meter is working OK

 

[javis]

P0732 Gear 2 Incorrect ratio
P0756 Shift Solenoid B Performance or Stuck Off

1996 Ranger 3.0l used a 4R44E
5R44E is the same transmission internally just had 2 extra sensors added to the outside, ISS and OSS sensors
5R44E main difference is the engine computers software

Yes, both used the same valve body and solenoids

I would first test the wiring before dropping the pan
Unplug the 16 pin connector on driver side just in front of the shifter

Then print this:
View attachment 101942

Use OHM meter on pin 10 and pin 14, solenoid B(SSB), should see 22 to 48 ohms if its OK

If it tests OK then look at the pin 14 wire on the truck side plug, see if it got pushed out or back so can't make good contact

If pin 10 was the issue all 4 solenoids would set codes

You can test SSA, SSC and SSD just to make sure OHM meter is working OK

Thank you. I really apreaciate the info. It will be very useful.