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XC90 Help, 2 issues unknown wire (image included)

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Old Jul 10th, 2019, 22:54   #1
timpearson1981
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Default XC90 Help, 2 issues unknown wire (image included)

Hi,im new to the forum and i have a couple of issues with my 2005 D5 volvo xc90, which i have just purchased as a run about.
Firstly, could anybody tell me what the wire/cable connector is for in the image. Its just hanging lose under the bonnet, on the right hand side of the vehicle as you look down.

Also i bought the car with a known fault. When i put the foot down, all seems fine, however the orange triangle comes on and "Engine System Service Required" text appears as a message. Code 042
After a couple of journeys , the message dissapears but always comes back when i rev the vehicle high by booting it.
The car has done 199K and has full service history.

What i have checked after reading the forums..
Air filter --- Looks clean to me
Cleaned the EGR valve and pipes the best i can. ( it looked like it has been done recently)
Swirl arm --- Im no expert but the arm was connected and it moved when i revved it.

I have ordered a new fuel filter , oil and oil filter as it was last done 9k ago according to the sticker.
Any help is greatly appreciated.
Cheers
Tim
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Old Jul 11th, 2019, 08:33   #2
SwissXC90
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If the engine appears to run well but shows Service Required then you need to read codes to find out the reason.

Anything else is blind guesswork.
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Old Jul 11th, 2019, 08:41   #3
reggit
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Worth looking down the back of the engine at the rubber pipe on the turbo inlet. They go soft over time and can collapse under high load bringing the warning on.

But as said, you really need the codes reading.
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Old Jul 11th, 2019, 11:54   #4
timpearson1981
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Thankyou for the advice.
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