Usually the Idle Air Control valve will throw a code when it is stuck one way or another, but you might unplug it and see if you still get those codes.

It is the device that controls the mix at idle, and when it does not work right your idle will be hell. It may be going out.

Your computer is trying to add fuel to the mix, and the sensors say it is too high. That usually means that your mix is leaning out (too much air/not enough fuel) and the computer is trying to compensate.

That is btw exactly what mine did. My IAC valve crapped out, which leaned out my idle and the computer added fuel to keep from blowing up the engine (lean = hot).

Check out the IAC, but in general everything in the air delivery stream, behind the MAF. If air is getting in that is unmetered, that can cause situations like this.

An exhaust leak before the 02 sensors responsible for fueling, or produce a lean read and trigger this response from the computer, but odds are you would hear an exhaust leak, and those 02s are in the cast iron manifolds which are not likely to crack or leak.

Go over the intake system from stem to stern focussing on everything after the MAF, and check that idle control valve.

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2001 E53 3.0 5pd