2012 Ford Fusion SE 2.5L
Engine running very rough, stalls, hard starting. Code pulled was P2196 Too Rich Sensor 1 Bank 1.
Replaced O2 sensor with new one.
Also changed spark plugs because I had a set. Old ones were real clean and not rich at all.
Now P2196 has been replaced with P2195 Too Lean Sensor 1 Bank 1.
I didn't expect that. Not sure where to go next though I do have some fuel injectors I'll throw in there.
Thoughts? TIA!