P0131 Oxygen Sensor Circuit Low Voltage (B1S1)

Description and meaning of DTC p0131

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 P0137,a P0131 code refers to the first oxygen sensor on Bank1. P0131 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. Bank1 Sensor 1 is located in front of the catalytic converter.

p0131 diagnostic trouble code symptoms

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

DTC p0131 - possible causes

A code P0131 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 p0131

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

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