P0161 Oxygen O2 Sensor Circuit Low B2S2 Technical DescriptionOxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)What does that mean?This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific ...
Essentially the same as P0136 and P0137 and P0131, a P0151 code refers to the first oxygen sensor on Bank 2 . P0151 means the O2 oxygen sensor's voltage remained low for longer than 2 minutes.This, is interpreted by the ECM as a low voltage condition and sets the MIL. Bank 2 ...