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Old 02-19-2015, 09:44 AM   #1
PeachOut
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Default P2109, No Throttle Response, Intermittent Idle after collision

Another P2109 CEL. I hit a dog going 70 at night a month ago and completly bent in my Perrin FMIC as well as deployed the airbags on me. The body shop got her all back together (2013 WRX) but now upon starting it she idles between 500-1200, back and forth with no Throttle response at all. I ran the CEL reader on it (Accessport) and it gave the P2109 error. Everything worked fine before the collision and there was no damage to the engine at all. I have read other posts with this same issue but it never had one that involved a collision. I cleared the CEL with no luck, even tried flashing my map although I wasnt hopeful there. Any ideas? They have a mechanic coming out today but I dont have a warm fuzzy about it. They may send it to subaru. Is there something we should be resetting to get the car to come out of some kind of limp mode?
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Old 02-19-2015, 11:44 AM   #2
ProfessWRX
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Is it possible something messed up the tps wiring?
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Old 02-19-2015, 11:58 AM   #3
PeachOut
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No damage there. I am going to clean the connections and reseat them tonight if their mechanic doesn't find anything.
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Old 02-19-2015, 12:11 PM   #4
ProfessWRX
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You could scan the tps voltage and other parameters associated.
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Old 02-19-2015, 12:22 PM   #5
PeachOut
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Quote:
Originally Posted by ProfessWRX View Post
You could scan the tps voltage and other parameters associated.
I have been reading that this is the correct way to troubleshoot the Code. I was trying to find out if the shop failed to do something along the lines of resetting something after the airbags deployed. Since the car is highly modified they are quite hesitant to mess with anything for fear of blowing up the engine. Would mean a free new engine for me, not the end of the world...
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Old 02-19-2015, 11:44 PM   #6
PeachOut
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Figured it out. A piece of the boost tubing cracked off and became wedged in the throttle body, effectively holding the flap open. Pulled the piece out and she runs like a champ again.
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