P2173 High Air Flow Detected - Dodge Charger Forums
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#1 Old 09-14-2010, 11:00 PM
c-Dub
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Join Date: Nov 2005
Posts: 30
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P2173 High Air Flow Detected

OK, I started flipping this code about a month ago. I finally took the time to read up and I'm beginning to belive I may have a vacuum leak.

Generally what happens is after driving on the freeway for anywhere between 8 and 20 miles, the car will loose power, idle rough and high (about 1500 rpm). I've noticed that it usually seems to happen when I let off of the throttle to coast when traffic slows. Turn the key off/on and all returns to normal.

So my question is......could this be the throttle body? I didn't consider a vacuum leak until tonight. Thoughts?

Thanks in advance guys!

Black SRT8 Option Groups I, II, and III. Techco Supercharger, Indy-Ported/polished Heads w/Titanimum Retainers, 4130 Push Rods, and a Comp Cams XFI 268 cam. Diablo Sport with Custom tune by Techco and E-Cut Outs (just for fun).
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#2 Old 09-15-2010, 01:31 PM
richd
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Join Date: Jun 2008
Location: Arizona
Posts: 1,209
Here is the cause of your code,it mentions MAP,and TPS:

Trouble Code: P2173

High Airflow/Vacuum Leak Detected (Slow Accumulation)

Trouble Code Conditions:Ignition is on and engine running with no MAP Sensor DTCs present. A large vacuum leak has been detected or both of the TP Sensors have failed, based on their position being 2.5v and the calculated MAP value is less than the Gas Flow Adaptation value.
Possible Causes:

Vacuum leak
5v supply circuit has high resistance or is shorted to ground
MAP signal circuit has high resistance or is shorted to ground
TP Sensor ground circuit has high resistance
TP Sensor signal circuit is shorted to ground
TP Sensor return circuit
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