XC60 - Oil sensor faulty?

[murrayaw]

I have a 58 plate 2.4D XC60 with 42K on the clock.

It's been pretty reliable apart from a flurry of recalls earlier in its life.

It was due for a major service recently and having been completely horrified by the ridiculous quote from my main dealer I contacted Halfords Autocentre who have been very good for other things I have needed. They offered a good deal and serviced the car using a very comprehensive check list.

When I got the car back the Coolant warning light came on almost immediately, although that was quickly fixed by topping up.

A day later I got an "Engine System Service Required" warning light and they found a "random" fault code indicating an intermittent fault and reset it. A day later the warning light reappeared. This time they told me that the fault was an Engine Oil sensor fault which was going to cost more than £250 to replace (mostly parts) - There was nothing wrong with the car, just the sensor.

I am struggling to see how this could be the case. The car is 4 years old and looking at other forums it seems that overfilling the oil can cause this type of problem on other models.

Has anyone heard of this problem before and if so, any ideas how to resolve it?

NB The Volvo main dealer wants £110 just to hook it up to the computer before doing anything!