P0151 O2 Sensor Circuit Low B2S1

Description and meaning of DTC p0151

This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. Although generic, the specific repair steps may vary depending on make/model. Essentially the same as P0136and P0137and P0131,a P0151 code refers to the first oxygen sensor on Bank2 . P0151 means the O2 oxygen sensor's voltage remained low for longer than2 minutes. This, is interpreted by the ECM as a low voltage condition and setsthe MIL. Bank2 Sensor 1 is located in front of the catalytic converter.

p0151 diagnostic trouble code symptoms

There may be no visible symptoms to the driver, other than the MIL (Check Engine/ Service Engine Soon) illumination.

DTC p0151 - possible causes

A code P0151 may mean that one or more of the following has happened:Faulty o2 oxygen sensorShort to voltage on O2 signal circuitHigh resistance or open on O2 signal circuit

How to fix OBD-II diagnostic trouble code p0151

Replace faulty sensorRepair short, open, or high resistance on o2 signal circuit

More OBD-II diagnostic trouble codes (DTC)