The upstream O2 sensor on bank 1 is stuck reading rich.
Informational only. Consult a qualified mechanic.
Check fuel injectors and replace O2 sensor.
The P2196 OBD-II diagnostic trouble code (DTC) indicates: o2 sensor signal stuck rich b1s1. This is a medium-severity powertrain code that your vehicle's onboard diagnostics system triggers when the upstream o2 sensor on bank 1 is stuck reading rich. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
Use Your Service Book to log this diagnostic trouble code to your vehicle's service history, track repairs, and get maintenance reminders — all for free.
Track codes on your vehicle — sign up free
Log OBD-II codes, get maintenance reminders, and keep your complete service history.