I've had a check engine light for several months and today I had the dealership check it out. The car is a '19 with <18k miles. Most of my driving is short distance, I only have 1.5-mile commute to work. They said both downstream O2 sensors are dead. It runs fine, has normal power, and mileage is as good as ever. They estimated cost to replace for parts, labor, diagnostics, etc. to be $1,475! Wanted to get opinions on this estimate and how difficult of a DIY project this is.

 

Those are in the gas tank no?
if so I wouldn’t touch it, but folks with other brands (ie Honda) have done it with mixed success.

 

Why isn't your car covered under the Nissan factory warranty? Salvage title?

 

No, they are not in the gas tank.

 

LOL!

 

The 3 year portion of the bumper-to-bumper warranty has expired. Powertrain warranty is still active but O2 sensors are not covered. I thought there was a "longer" emissions warranty, I'll have to read my manuals again.

 

My thoughts exactly. I had to reserve comment when I read that...