Question

I got the engine code P0131 on my 2000 Buick Century, where is HO2S location?

Answer 1

Hi there,

The code is specific to the first O2 sensor in the system. This is the one before the catalytic converter.

Answer 2

P0131 BUICK Code - HO2S Circuit Low Voltage Bank 1 Sensor 1
Read more: https://www.autocodes.com/p0131_buick.html