P0131: Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 1)
What does the P0131 Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 1) mean? P0131 code gets triggered when the Engine Control Module detects that the voltage from the oxygen sensor—also known as the air-fuel ratio sensor—has remained below 400 molts for more than 20 seconds, causing the engine to run either too rich or…
