P0351 won't go away on my Ford escape 2002.

What is your question?

The car runs good until it gets warmed up then the check engine turns on. The code is p0351 bad ignition coil number 1.Ive switched them with known good one even bought a new one still says the coil is bad .I also switched the connector to see if that was the problem still the same. Can a bad 02 sensor cause a misfire?

What makes this problem better or worse?

Driving in heavy traffic