shudder, smoke, codes...= AOS?

This is a neighbors car, 01, box S 76k miles, tiptronic - well maintained.

Last week she noticed a "ton" of smoke at start up. She said it went away. Yesterday, her check engine light popped on, and she noticed the car shuddering at idle, then spewing whitish plumes of smoke that went away, and then came back on hard accel. The codes were p1128 and p1130.

She just lost her job, and I think I can do this for her...before I have her spend the 150 or so for the part, and I waste my time, does this sound like an AOS?

Any tips or suggestions, or other things I should be looking for?

Thanks in advance!