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

A code P0770 or P0773 may occur at higher mileages which indicates that the 3-way lock-up solenoid is defective and will need replacement.
RepairPal Verified
Average mileage: 208,142 (152,000–283,000)
5 model years affected: 1995, 1996, 1997, 2000, more2002
12 people reported this problem
5 people shared problem details
1997 Toyota Avalon283,000
check engine light kept coming on. I ran the code came back as po773. then my transmission whent out as i was on my way to the mechanic to get the problem fixed so i replaced my transmission
1996 Toyota Avalon200,000
I have change the selenoids and still engine light on
Automatic Transmission May Not Shift Correctly at High Mileages Verified At higher mileages, (125,000-150,000) theautomatic transmission may not shift correctly. This can be caused by the throttle position sensor being out of adjustment or ashift solenoid needing to be replaced. Typically the transmission does not need to be completely overhauled.
2000 Toyota Avalon238,000
1996 Toyota Avalon152,000
P0773 Not solve yet

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