Hello, I’m new on the forum and always appreciate having a venue like this to ask specific questions about a vehicle I own. I’m a DIYer and avid shade-tree mechanic, down in southern Missouri.
My question: We’ve got a ‘13 C-max hybrid with 120K. Well-maintained and has been in the family from the get-go. Twice recently, after highway driving, this same check engine light has appeared: P219A (incorrect air/fuel ratio in one engine bank). I’ve got a few theories, but I’d like to hear some more likely causes. Who’s come across this one and what was the fix?
Thanks!