P0770/P0773 fault code at higher mileage due to failed 3-way lock-up solenoid on Toyota Tacoma

Problem Description and Possible Solution
A code P0770 or P0773 may occur at higher mileages which indicates that the 3-way lock-up solenoid could be defective and may need replacement.
Problem Data
RepairPal Verified
Average mileage: 183,550 (88,200–250,000)
Drive Trains affected: 2WD, 4WD
5 model years affected: 1995, 1996, 1997, 1998, more2002
7 people reported this problem
Viewing 1 - 2 of 2 problem details
Engine Check light came on, and flashing overdrive light. Later just the engine check light stays. Got a code reader and the code is "P0773" Shift Solenoid E Electrical. Cleared the code once and came back on maybe 3 weeks later. Any suggested courses of action?
Code p0770 And transmission won't go reverse... Only forward after I drain and put new oil on it ... How can I fix this ...???