P2099 is rated as medium severity. Schedule service — affects performance or emissions.

P2099

Post Catalyst Fuel Trim System Too Rich (Bank 2)

Q: What does code P2099 mean?

Post Catalyst Fuel Trim System Too Rich (Bank 2): The downstream fuel trim indicates the system is running rich after the catalytic converter on bank 2.

Powertrain Code · Medium

What does P2099 mean?

The downstream fuel trim indicates the system is running rich after the catalytic converter on bank 2.

System: Fuel System

P2099 is a powertrain diagnostic trouble code indicating post catalyst fuel trim system too rich (bank 2). This code is classified as medium severity, which means: schedule service — affects performance or emissions.

Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your vehicle.