Code p1035?

sometimes it runs okay, then light comes on goes into low power mode.

The P1035 code problem with the heater circuit for the oxygen sensor located in bank 1, sensor 1.

This guide will help walk you through the steps with instructions in the image below for your car:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Check out the images (below). Please let us know what happens.