Hi,
The code doesn't condemn the transmission. Actually, there is an issue with the transmission fluid pressure switch. The voltage is low.
I attached the diagnostics below, but you need a scan tool that can communicate with the TCM and actuate different solenoids.
As far as a filter, no. The service procedure is simply a drain and fill. See the last two pics below. If you want to drain and refill the transmission, I also recommend flushing the cooler lines.
Let me know if the tests are something you are able to perform the tests below.
Also, let me know if you have questions and what you find.
Take care,
Joe
See pic below.
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Tuesday, December 6th, 2022 AT 4:44 PM