Hi pumpkin_hook and welcome to the Ford Fusion Club. No, the P2196 DTC is not a common issue.I recently purchased a 2017 MKZ, 2.0, with ~55k mi. Two days ago a P2196 code was set. In my limited research there are several causes, but before I get too far down the rabbit hole, is there anyone who had this scenario and what was the resolution? Is this common with this engine? Thanks in advance.
All you can really do is follow the trouble shooting tree to attempt to eliminate all possibilities.
Take a look here: P2196 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1) DTC
Keep us updated and good luck.