o2 sensor
 

Just replaced my front o2 sensor today,88'000 miles?
I had Mil lamp lit ,done live data tests and a p0032 code.
It was the heater that had packed up,no continuity, then tested it off the car with live to the heater side and was cold,dead sensor.
UK Volvo wanted £265

Managed to find a replacement Denso with same part number for £80+vat
Mates rates from a friend who runs a motor factors.

The only difference in the part,it didn't have Volvo stamped on it.

Cleared the code, took it for a short drive cycle,happy days

Best £80 Ive spent this month, will get that back in fuel consumption in a year.