Efile transmission not going through, error code 2

[user17736203478]

I had the same issues too years in a row and also found help line to be very unhelpful and uninformed. I just had this problem and after reading some comments, realized that my file sizes were too big.  When I converted my jpeg file of Form 8453, it was a 19 mg PDF file.  I then printed my jpeg as a 'print as image', which still converts the jpeg to a PDF, the PDF file was under 1 mg.  I then re-attached the new and smaller 8453 PDF file and it went through immediately.

[ttuser2026]

I had the same issue. Glad I found this post.

I let TurboTax convert my jpeg of the signature form to a PDF.
After reading this post, I converted it to a PDF on my computer first, and then uploaded the PDF.

Problem solved.  😎 

[leetax88]

I got the same transmission failure message when I tried the 1st time.  I tried again later and the message says that I need to get the latest Turbo Tax update.  I did and then the tax return was transmitted without any problem.