XC90 2016 T6 o2 sensor - how much service ?
 

I got upstream o2 sensor busted ( no.3 on diagram attachment ) : heater circuit shows no resistance ( unlimited resistance ) , where downstream o2 sensor ( no.2 on diagram ) shows 55-62 ohm resistance on the heater wires ( there are 4 wires per sensor - 2 for heaters and 2 for feedback signal )
I looked from under the 2016 XC90 and these sensors are impossible to get unless you remove exhaust = lots of work.
Does anyone did it or know how much it costs to get it replaced ? Please don't tell me : "it can be between 200 and 1500".
I am sure Volvo dealers have exact procedures and price for this. Here are some pictures.
https://cimg1.ibsrv.net/gimg/volvofo...5287a9cea5.png
https://cimg8.ibsrv.net/gimg/volvofo...8513166727.jpg

most professional shops use a quoting tool for a job like this to determine "book labor". Have you called around for an estimate? Have you gone under the car to see which if any of the sensors are accessible w/o dropping the cat? Also, which engine?

You don't need to remove the exhaust. I don't think I've had to replace one out of warranty but labor time is likely not much more than an hour. They're not that hard.

Cost of parts ans repair o2 sensor - 2016 and up XC90
 

On 2016 XC90 T6 Inscription 2.0L engine:

Ok so my sensor is fixed and ENGINE LIGHT DISSAPEARED .
At first I was not 100% sure which sensor was wrong so:
I disconnected any 1 sensor from the connector then read codes
If i see 2 codes now it means that this sensor is not the one.
if i see still 1 code this is the bad sensor.
once i knew which one is bad I ordered it from dealer: $210 CAD
I called 2 different mechanics and asked bow much would it cost to replace . I described that it is hard to get and they might remove exhaust pipes. In both places I got quote 1.5-2hours
I got to 1st closest mechanic who gave me quote and he did O2 sensor replacement for $160 CAD 1.5h of his time. All is good now.

Hi, how do you get to it?
 

C
Hi, Can you explain how to replace this upstream 02 sensor?

I dont’t have vehicle hoist to lift car 6ft off the ground. For me laying on the roller cart under the car with exhaust 6inches above my nose, that task was not easy so I rather send it to the shop.