Code P0750, the check engine light came on?

2013 DODGE GRAND CARAVAN
180,000 MILES • 3.6L • 2WD • AUTOMATIC
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After replacing the solenoids, I disconnected both the negative and positive battery terminals. Once the job was complete, I reconnected everything and started the car. It ran great, and I tested the manual gear selection, which had not worked previously, but now it did.

I took the car for a test drive, shifting smoothly through all gears, including 5th gear, with no issues. After returning home, I checked the transmission fluid, which appeared to be within the proper specifications according to the dipstick chart.

However, after pulling out of the driveway and shifting into park, the check engine light came on. Now, the same code and issue have returned, with the car not shifting out of first gear
Feb 20, 2025 at 2:22 PM
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Did you replace the transmission solenoid pressure/switch assembly? I have seen internal issue cause this code, or a corroded PCM electrical connector.

The P0750 trouble code refers to a Shift Solenoid "A" Malfunction.

How is the fluid condition is it burnt? Is this what you replaced with the pressure control solenoids? Check out the images (below).
Feb 21, 2025 at 9:56 AM
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Yes the fluid was burnt yes the pressure control solenoid is what I switched. Where you have to take the transmission valve body out and get the bolts from behind liking the picture. I had a video so you see how dirty the fluid was.
Feb 21, 2025 at 2:47 PM
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Okay, so like I say this code can be caused by an internal problem inside the transmission. New fluid, you replace the part and the pressure control solenoid. Not much left that I know of.
Feb 22, 2025 at 11:59 AM