I have been working from home since lockdown and my car rarely leaves the drive these days other than short trips to golf club/driving range. Last Thursday I had to drive 180 miles and then returned a few days later. About 10 miles from home I got engine failure warning. I stopped the car and restarted it and the light remained on. I went out of the car and checked for any signs of leaking oil, the temperature gauge was normal. When I got back in car light was off again so I drove home carefully. Drive it yesterday for first time on a short trip and no light again. Done some research and suggestion it may be to do with DPF and I need to do a re gen. Can anyone confirm and, if so, what that means please? TIA