Hey all! Tuning a newly-swapped 402 in my 2006 TBSS (E40 & A4). As of a couple days ago I started getting the following codes after every write:
P0689
P1516
P1682
P2101
Throttle body stops responding and motor will crank but not fire. Odd thing is after 15min or so of just sitting there (and a couple of disconnecting battery cycles) the problem stops and motor fires right up. But as soon as I make a tweak to the calib (like simply changing the Base Running Fuel Air a little) and then write the tune, the codes come back and I have to wait it out again. The last month or so (not including the last few days) I could simply stop, make a tweak to the calib, upload, then take off again.
I've searched _all_ over the interwebs and this forum for a solution, playing with the 1516 and 2101 % settings in Engine Diag/Airflow, and I can't seem to fix the issue. It's not the throttle body (I swapped out with a known good one and didn't fix the problem), not relay, fuse, or electrical related. It only happens after I do a Write.
Has anyone had the same problem or know of a fix? Yesterday I was at a stoplight and the motor just shut down in the middle of traffic. 15min later (after frantically trying to figure out WTH happened) the motor fired back up.
Thanks everyone!
Jesse