The other day I noticed a problem with my 2012 Nissan Cube (Automatic trans). When I started the car, I noticed the RPMs didn’t move, it stayed at just above zero, maybe 100-200. Usually it would start up around 1500 and drop down to 800-900 after a couple minutes. When driving the RPMs were off. At 40mph not going above 1000 or just barely above, and when coming to a stop just hovering over zero. Car wasn’t shaking or anything. After parking it and turning it off, to run into the store. When I returned and restarted everything was normal again?