Technical Description
The oxygen O2 sensor circuit is experiencing low voltage in Bank 2, Sensor 2.
What does that mean?
This diagnostic trouble code (DTC) is a generic powertrain code that applies to OBD-II equipped vehicles. While it is a generic code, the specific repair steps may vary depending on the make and model of the vehicle.
Essentially, this code indicates that the PCM (Powertrain Control Module) has detected either an excessive current draw or an open or short circuit in the oxygen sensor’s heater circuit. This specifically refers to the Heated Oxygen Sensor (2) located at the rear of the catalytic converter in Bank 2.
Symptoms
Causes
A code P0161 may indicate one or more of the following:
