I just got this code along with a few other codes.
It calls for : "Throttle Actuator control/ stuck open."
"Body Service"
Also got P0638: "Actuator control range."
How can you tell when a throttle body is shot ( and need a new Unit) versus a good cleaning or replace some parts (if you can?)
thanks

The way I would approach it is to pull it off and give it a good cleaning - that needs to be done periodically anyway.

If that doesn't cure it, then you start thinking about purchasing another.

Is this on your 2006? If so, then a replacement throttle body is plug-n-play, no programming required.

Personal experience: We were getting repetitive throttle related fault codes on my wife's 2005 S80 2.5T, along with the "Reduced Engine Performance" message. Cleaning it did not cure it. Replacing it didn't cure it either. Removing the ECM and plugging it back in DID cure it.

Now a spare $350 Bosch throttle body is sitting on the shelf looking pretty.

My advice to anyone experiencing chronic throttle faults, that they can't cure with a simple cleaning, would be to check the ECM connection and also consider the condition of the wire harness between ETM and ECM, all before plunking down the $'s for a new ETM. I think the later ones, after about 2003?, are supposed to be pretty robust.
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Current rides: 2005 Volvo S80 2.5T, 2003 Volvo V70 2.4NA, 1973 Volvo 1800ES (getting ever closer to road worthiness)

Chris Mullet,

Where exactly is the ECM that controls the throttle body.

We have the dreaded P2111 code throttle stuck open.

The ECM is inside the black box on the passenger side of the engine bay. It takes a special tool to remove and replace it. Cleaning the throttle body first is a must.
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Keeping it running is better than buying new