Jeep07

I got a CE Light 2 days ago. Had the codes checked and it was 2 codes Both for rear O2 Sensor. Does the C43 have 2 rear O2 sensors and 2 upfront? If so what would cause both to go bad on the same day?

Where is the best place to buy replacements and how much install time should this take? Is the install straight forward or do I have to pull a bunch of stuff out of the way? I'm at the point of trading the car for a truck but dont want to take it to a dealer with a CE light.

Car has 116K on it.

Thanks.

C43AMG

Yes. My mechanic dropped the entire exhaust system and did all 4 at the same time.With the mileage you have you might as well do all 4.