contourguy99
New CEG'er
Hi I replaced the oxygen sensor, and I am still getting the lean code on this bank P0155 and P1155. What surprised me is when I brought up the sensor graph in torque there was no sine wave just a flat 0v line pretty much while the other had a pretty sine wave in bank 1 sensor 1. I was expecting a lower voltage shorter wave since it was saying lean. Anyone else experience this on a contour and found the cause? Car is 99 SE V6 2.5 Vin L.