F150 Codes
Yup. For example: when I change tunes on my truck with my XCAL2, I always have P1000 code for a few drive cycles. There is no check engine light or anything.
P1000 is legitimate. That just means that all sensors are not reporting a ready condition yet. It will go away when all self-tests are complete, it can take quite a few drive cycles. The only reason it's there is for emission testing purposes - it tells the inspector that not all tests have passed yet. Otherwise, you could clear codes and go get it inspected quick before you trip a CEL when you have a problem you don't want to fix.






