Posted: 9 years ago Quote
2001 Ford Taurus SE (V6 3.0 OHV) drives normally, shifts smoothly (up and down), but "check transaxle" light comes on after making several stop/go's (code p0731, gear 1 incorrect ratio).

Following 3rd party advice, I replaced the OSS (since it was quick and cheap). No change.

AllDataDIY documents link code P0731 to the SSA, SSB or internal parts. They recommend "PINPOINT TEST A".

What would you recommend next (besides "PINPOINT TEST A" since I don't have the test equipment)?