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2007 XC90 V8-4.4 Other half of connection?

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
Pauldoug
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2007 XC90 V8-4.4 Other half of connection?

Post by Pauldoug » Thu Jan 02, 2020 2:10 pm

I recently had the radiator replaced on my 2007 XC90, and when I got it back, noticed a plug was disconnected. It’s located to the right (as you face the car) of the air filter housing. Here are 3 labeled photos to show what I’m talking about:
B06848AD-C7FA-45CF-92AB-7FF1FE36F103.jpeg
89727954-A947-4C7F-AB32-756C34CAAD3B.jpeg
AB635E85-CCF8-4146-97B0-82870D7F4810.jpeg
The first two are of the same location, the second is a closeup. The third is of what I think is the corresponding connection on the passenger side of the car.

The problem is that I can’t for the life of me find the other half of the connection (much less do I know what it’s for). Does anyone know where those wires would be coming from? Perhaps someone could post a photo of the same area in a same or similar model year XC90 V8.

By the way, I got a check engine light (p0174) shortly after getting the car back from the shop. Don’t know if it’s related to the open connection.

Thanks for your help!

Masscomguru
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Masscomguru

Re: 2007 XC90 V8-4.4 Other half of connection?

Post by Masscomguru » Thu Jan 02, 2020 6:07 pm

I have the same exposed plug on my 2010 V8. If I had to guess, it would be for an accessory like the optional aux lighting kit. That being said, the code you have is system lean. I would look for air leaks around the intake especially vacuum lines and I noticed your air box is zip tied? maybe make sure all the connections are tight around the mass airflow sensor.

Pauldoug
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Joined: Wed Jan 01, 2020 8:44 am
Year and Model: Xc90
Location: Rockland County
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Pauldoug

Re: 2007 XC90 V8-4.4 Other half of connection?

Post by Pauldoug » Fri Jan 03, 2020 12:44 am

Thank you, Masscomguru! You saved me from a wild goose chase. A different plug had been left unconnected during the repair; I thought this was another one.

The zip tie is temporary. I’m not sure how to attach the air cleaner box to the body. I think it’s held down with a nut on that piece that’s just in front of the plug.

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