Thank you for your reply.
As stated before, my Camry's auto transmission slips and hesitates when starting cold between first and second gear (between 15 - 25mph). It seems to work fine after it warms up.
After resetting, the engine light comes on not immediately but after several miles of driving (when it's running fine) with the P0773 code.
Do you know if the shift solenoid valve SL is causing this, i.e. is this an electrical problem? What does this valve do and when does it kick in? For example, is it functional at low speeds or does it kick in after highway speeds? I'd like to know if this is a solenoid problem only (OBD2 code P0773) or if they might be a more fundamental mechanical transmission problem.
Also how can I reply to you without public display of email addresses? Thanks again.