Code 2764

[jimeneztrans84]

Was climbing a slight grade hill enough to where I had to drop to 1 gear, all of a sudden I hear a weird noise coming from I think sounded like turbo, check engine light came on and engine started to derate. I down shifted to 8th to pull over to shoulder and problem went away. Looked on quickserve and exhaust temp got over limit so it started to derate engine...i replaced sensor about 120,000 miles ago. Engine is 2011 cm2250 585k. Should I replace sensor again?