94 Geo Prizm - O/D light flashing- ECM Code

1994 Geo Prizm LSi - 1.8L 4-speed Auto. 145,000 miles

O/D (Overdrive) light flashing once every two seconds when driving.

When in (D)rive car will not start in 1st (Low) gear. Starts in 2nd only and upshifts OK. Same symptom if O/D is engaged or not engaged. Engaging O/D is working - will drop to 3rd if disengaged and visa-versa.

Gear selector can be manually put into Low and and upshifted manually to Drive. Transmission is OK. Fluid OK.

Getting a code 62 and 63 from the ECM. Cannot find any reference to these codes.

Any thoughts on where to begin? Is there a tranny modulator somewhere? Vaccum leak?

Thanks - Jim

FWIW - Took the Prizm into a dealer today and after a $60 transmission service and $12 bottle of "conditioner" the O/D light still blinks and the car is still skipping 1st gear when in Drive.

If this doesn't fix it then I "need a new transmission". That is total bull^$&^%# in MHO.

I would appreciate any thoughts you might have on this problem.

JB

I am having the same problem. what was the outcome for you?

I would post this in the Prism or Toyota forum for better responses, also this a 6 year old dead thread.