What does code P0173 mean?

Fuel Trim Malfunction (Bank 2): The fuel trim values are outside the expected range for bank 2.

P0173 is rated as medium severity. Schedule service — affects performance or emissions.

P0173

Fuel Trim Malfunction (Bank 2)

Powertrain Code · Medium

What does P0173 mean?

The fuel trim values are outside the expected range for bank 2.

System: Fuel System

P0173 is a powertrain diagnostic trouble code indicating fuel trim malfunction (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.