Some of you may know that I have had some issues with the GPF filter. In short, the first issue came just when I had driven 2300 km with the brand new car. I received the car in January 2020. Last January wasn’t particularly cold and beginning of last year I had more driving since my work involved that. Among that I had short distance driving too and that may cause GPF warning light to lit on. As the car cannot do it’s work to clean the filter. Cleaning filter requires car to be fully warmed and especially during winter it takes obviously longer to warm up.
After the first GPF issue, I faced it 3 more times later the year. Summer time went quite well actually. Summer was warm and I had probably the right kind of driving to allow proper regeneration procedure for the gasoline particulate filter. I had also 9 week summer vacation and when it was possible, we had some longer trips too. So I guess conditions were better for GPF too. Issues came back when the weather went colder and I returned to my normal driving and routines.
GPF software update
I had first service for the car in January 2021. During that time also the GPF software update was applied to my car. According to Subaru, the previous version incorrectly estimated the need for the regen procedure. It should work better especially in the colder weather.
I have been driving now nearly a month and almost 2000 km with the new GPF update. So far so good! Not a single sign of the GPF issues. I started weekly highway driving some time before I got the update. I still do this procedure to make sure that car gets its opportunity to burn soot and other impurities from the filter. I hope this is not too early to report that issues have gone. I decided to report already now as past days and weeks have been rather cold on my area. Over -15 Celsius many days, then I had one week with lot’s of cold starts (only short pre-heating with the electric block heater) and many short distance driving. I would suspect that with the previous software version I would have orange light on the dashboard. So newer version seems to have impact to better direction.
I will continue monitoring the situation and of course report on this blog if the problem comes back. As for now, GPF issues seems to be gone.