Hi,
I never heard of that, but anything is possible. Once the battery neg is disconnected, turning the light switch on won't complete any circuits, so I'm not sure where that came from. I do know that if you disconnect both terminals, tie them together with a zip tie, which will drain any capacitors that may be retaining power.
The codes you have are both related to the throttle actuator control system (TAC). Double check that none of the wiring has been damaged or disconnected. Also, if you had the air inlet tube off, make sure nothing is preventing the throttle plate to be stuck. The P2111 indicates the throttle body is stuck open.
Let me know.
Joe
See pic below.
Image (Click to make bigger)
Tuesday, June 25th, 2024 AT 7:49 PM