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Both codes are related to pressure values and may have a few causes.
Is the fluid foamy? Could be caused by a filter seal issue. Old one did come out and new one fit well.....
Other check would be all electrical connections. Plug properly seated and locked at the trans ?
2 Grey connectors near the brake booster OK? Have seen wires rubbed thru bt tie rod in this area.
Clean and flush plugs and connectors with Electrical Contact Cleaner.
I'll double check the wire connection to the tranny. I assume you mean the green wiring harness with the red tab. Are the 2 gray wires by the brake booster would those be seen under the hood or under that car. I did just replace both outer tie rod ends so maybe I managed to jar one of those gray wires loose. I doubt it but it's always a possibility.
The filter o-ring came out with the old filter and new filter and o-ring went in with no problem. I'm hoping I didn't buy a bad solenoid pack and have to start all over. That was a real messy job.
As it turns out I had the codes wrong. Originally I had code 0846 when the transmission would get stuck in 2nd gear so I'd have go restart the car and everything would be OK for a little bit. After alot of research I replaced the solenoid pack and everything is shifting ok while driving. That is till I come to a stop(5mph) and the car jerks forward. It happens while pressing the brake pedal or not. Now I have codes 1775 and 0841.
Once you disconnect the shift cable, manually manipulate the lever as far Forward as it will go.
Remove the leer from the shaft, remove bolt, clean shaft (so it will slip thru the seal)
Drop the valve body : NOTE Two accumulator pistons and springs will come down with the valve body.
Can be a bit of a juggling act going back in.
When reinstalling be sure to "latch" the park pawl assembly as shown in image. One click past Park will latch it.
Is the park pawl assembly one position past park the same position it will be in after I manually disconnect the shift cable and move it as far forward as it will go (clockwise I believe) or is that a different position. I moved the lever forward so that the valve body will drop out but I didn't touch the park pawl assembly until I got the valve body reinstalled and put the lever arm back on the shaft and moved it all the way counter clockwise.