I have found the key is letting it do the regen on a weekly basis. It needs to go over 55 mph for at least 20 minutes. It also hates cheap diesel fuel. Will throw a check engine light every time.
I have found the key is letting it do the regen on a weekly basis. It needs to go over 55 mph for at least 20 minutes. It also hates cheap diesel fuel. Will throw a check engine light every time.