I have a 2017 Ford Expedition and had a CEL about 3 weeks ago and scanner showed P219B. Mechanic said 2 of the 3 fuel injectors on Bank 2 were bad and suggested I change all 6 since they are hard to get to, which I did. Everything has been good since then - lots more power, engine seems smoother - but this morning the P219B came back. I'm at 125k miles and will be replacing the spark plugs over the weekend. Any other recommendations on what to look at? My scanner has limited diagnostics but shows the O2 sensors "passed" whatever checks it does.
Thanks in advance...
Thanks in advance...