Toyota Repair: E77 Shift solenoid circuit error, sienna xle, torque converter

Question
I had recentle replaced the shift solenoids on my 2000 sienna xle, now after 2 weeks the check engine light re appeared and with a different error code.It already cost me a lot the first time, would this job be another wallet breaker? Is this a big job? I'm not sure of the error code, but I'm pretty sure that the mechanic said that it was the shift solenoid circiut error.Ny van has 90000 miles on it. thanks in advance.

Answer
I'm not sure how much help I can offer without knowing the actual error code but I beleive the error code you are referring to may be a PO770 which is a torque converter lock up solenoid malfunction but I also beleive that it was replaced from what you are telling me, now for the bad news,Toyota had issued a service bulletin, TSB EG006-00, that addresses the PO770 code, it involves replacing the torque converter,if you wish, I can send a copy of the bulletin to you if you can give me an email address to send it to.