O2 Sensor Circuit Malfunction (Bank 1, Sensor 2)
Powertrain Code · Medium
What does P0136 mean?
The downstream (post-catalytic converter) O2 sensor on bank 1 is malfunctioning.
System: O2 Sensor
P0136 is a powertrain diagnostic trouble code indicating o2 sensor circuit malfunction (bank 1, sensor 2). This code is classified as medium severity, which means: schedule service — affects performance or emissions. We have vehicle-specific diagnostic data for 7 models below. Select your vehicle for tailored causes, symptoms, and repair cost estimates.
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.
See causes, symptoms, and repair costs for P0136 on specific vehicles: