I've read various threads on this. My problem started with the above warning. Had the car from new. It's now coming up five years old but with only 48000 miles on the clock. The garage (dealer from whom I bought the car) advised possibly a faulty sensor. They looked at it when it was in for a service and appeared to rectify it (warning gone). Due to Covid I'm not driving much and five days later I took the car out. After four miles, the amber engine warning came up. The garage have told me it might be the sensor but it could be one of several causes. Anyone experienced the same?