Hello,
I am from Poland, and i can make sOme mistakes in words, sorry.
I bought a Jeep with an automatic transmission error. the predecessor probably replaced everything he could - pressure sensors, control panel, solenoid valves.
The first error P0841 pops up and then P1775. The box was dismantled, no filings, clean oil, filters too. After storing the error, the gearbox works perfectly, until an error appears. Sometimes I will do 300 km and it's ok, and sometimes 5 km, but then I remove the error and it's still going well. I will add that in rainy weather the error pops up much faster.
Three mechanics tried, but failed and apologized for making the hope.