I have a 2000 ES350 with check engine codes P1130 and P1135. I just looked up the part from Napa and it shows part number, Denso DEN 2349021. It looks like this same sensor is used in two different areas, Upstream Rear;Bank 1 Sensor 1; Upstream Front;Bank 2 Sensor 1. I replaced this same part last year for the Upstream Front; Bank 2, Sensor 1 and was hoping somebody can confirm that this same part is used in both locations. Thank you very much!