What does code P0157 mean?

O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2): Low voltage from the downstream O2 sensor on bank 2.

P0157 is rated as medium severity. Schedule service — affects performance or emissions.

P0157

O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)

Powertrain Code · Medium

What does P0157 mean?

Low voltage from the downstream O2 sensor on bank 2.

System: O2 Sensor

P0157 is a powertrain diagnostic trouble code indicating o2 sensor circuit low voltage (bank 2, sensor 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.