Put the studded snow tires on. Nokian Nordman 7s. Wow. Without the passenger seat in (washing the covers) and the glove box out for cabin filter swap, and radio code MIA due to recent office “clean up,” the cabin noise is astounding.
I was getting the P1644 with my IMA-bypassed Insight. I fixed it by moving a ground. But recently had ECM issues that were probably related. Check the ground terminal on the cylinder head next to the MAP sensor. Mine was barely hanging on.Code was 1644. Both packs relatively well charged. One that came out had recently been grid charged. I think it could be a wiring issue. Now I have to do electrical trouble shooting, not a strength of mine.
Where did you get the uphill sticker? I want one!