engin light po 140

Question

check engin light on one code pending

Answer 1

Hi there,

This code is pointing to the O2 Sensor on bank 1 sensor 2. Most often, the sensor is the problem. Here is some more info for you.

 P0140 BUICK - O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2

Read more: https://www.autocodes.com/p0140_buick.html