Hello fellow Volt owners, I recently bought a 2012 with 115,000 miles on it, and have been using it for about two weeks now. The CEL began to appear on the dash about three or four days ago, and I finally got a chance to pull the codes that was triggering the light. They include: P1AF0, P1AF2, P1E22, P0AC4. I have read others on this forum that have had some of these codes and I'm guessing it might be something to do with the battery heater??? I'm not sure if having all of these codes at once means something different such as a major repair, and would like to hear from some of you guys. Any help or explanation is appreciated. Thank you.