Oxygen sensors

[Merk]

What should it cost to replace both oxygen sensors in 2015 Legacy(42000 miles)

 

[Lou O.]

Pre catalyst or post catalyst?

 

[manicmechanic007]

Around 400.00 total
But, at 42k miles
You should not need any O2 sensors yet
Have you watched them switch using a scan tool
Monitor the oxygen sensor PIDS and go from there

 

[Dick Foster]

At only 42k your O2 sensors should still be good unless you're burning oil or something that is making them fail. Find the cause first.