ATSG CONFIRMED FIX - DECEMBER 2025
2018 Toyota Avalon UB80E
Complaint: No Lock-Up after rebuilding, setting code P2756-7F, this is Slu solenoid stuck off.
Cause: Damaged TCC charge sealing ring on input shaft.
Correction: Replace the sealing ring.
Part numbers related to the repair: NA
Year Make and Model of the Vehicle: 2018 Toyota Avalon
Mileage: NA
Transmission: UB80E
Additional Notes: This seal is very easily damaged during assembly so always make sure it is sized correctly using the proper tool. If not, damage will likely occur and the result would be lock up slip and setting code. Check the attached photos of sealing ring location and how it seals the conv charge from TCC apply.
Pictures/Diagram: see included images
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