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Re: Toyota U6660E Fail Safe; 1st and 3rd thru 6th gears
Posted to Transmission Forum on 7/6/2024

Got it done. Another ECM corrected all of the false fault codes except the temp sensor open code.

I ordered a shop level scanner, pulled off the pan today, and activated all of the solenoids which were fine...plus speed sensors showed fine on this scanner. F... Login to read more.