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Check Engine Light P2103 P2112

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Old 07-13-2008, 06:20 AM
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Default Check Engine Light P2103 P2112

I need some help with some CEL's that I am getting on my 2005 TC.

I hooked up my Scangauge II and I got P2103 (Throttle Actuator Control Motor Circuit High). The car would start but it would rev up and then shut down.

I cleared this code and then I started getting a P2112 (Throttle Actuator Control System – Stuck Closed). Now the car won't start.

Do you guys know what the problem is and what the possible fix might be? Does the car's DBW system need replacement or reprogramming? Right now the car isn't running so it would have to be towed to the dealership if I can't get it fixed at home. Thanks.
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Old 07-13-2008, 12:48 PM
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this is what was happening to me a few months back. i have an 05 also. i was throwing the same codes and had to limp the car to the dealer. i found out (this is what the mechanics told me...) that the throttle sensors are part of the throttle body. therefor they had to replace the whole throttle body. 900.00 part + labor. thank god i had the extended warranty...

i also had and have an injen cia which did not bother the dealer. i talked to to mechanic "off the record" and he stated that the cia wasn't at fault.

my extended warranty is not through toyota so i do not know if they needed to replace the whole TB or if it was easier to do that. usually you can replace the sensor. the mechanic stated "not in this car, you have to replace the whole TB assembly". that is a very expensive sensor.

good luck man.
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Old 07-14-2008, 04:23 AM
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The TC is supposed to have a 60 month, 60k powertrain warranty. Wouldn't the throttle body (fuel system) fall under the powertrain?
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Old 07-14-2008, 12:34 PM
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I would assume so. I'm assuming Javawacked was over that warrenty since he said he used his Extended warrenty.
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Old 07-14-2008, 02:39 PM
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I just spoke with my local Scion dealership and also called Scion's Customer Service line and they both confirmed that the throttle body is not covered under the powertrain warranty. It is covered under the basic warranty which has, unfortunately, already expired on the car.
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Old 07-16-2008, 04:20 PM
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really? Wow I would definitely expect it to be covered under the powertrain warranty. Id try and go to a couple dealerships and try and get it covered. Could you maybe just get a throttle body off a junk yard tc maybe? Im not exactly sure how it works or what needs to be changed tho...
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Old 07-16-2008, 06:11 PM
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I found one on craigslist but the seller has not responded yet. I've also noticed online that the throttle body appears to be different between the 05 and 06-07.
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Old 07-16-2008, 09:31 PM
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i don't think it's gonna be different for the 06. I think 05 and 06 have the same throttle body. 07-08 is different. I'm not 100% on that tho. Might wanna double check that.
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Old 12-27-2008, 07:53 PM
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ever find out what it was my car is giving me these codes too.
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Old 12-27-2008, 11:06 PM
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There are a few salvage yards in KC that have Scion tC's, you might be able to get one for cheap.
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Old 12-31-2008, 07:53 AM
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I replaced the throttle body. I found one on Craigslist for $50. It worked great. Don't forget to reset your ECU after you swap out the throttle body.
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Old 12-31-2008, 01:11 PM
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problem is around here where i live is almost impossible to find a tC in a junkyard or craigslist. Toyota said they would cover the throttle body so all i need is a stock intake and ill see if they fix it.
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Old 12-31-2008, 08:41 PM
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if it's still within the 3 year 36k mile powertrain warranty, then you're good to go.
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Old 12-31-2008, 08:56 PM
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Originally Posted by f00dstamps
if it's still within the 3 year 36k mile powertrain warranty, then you're good to go.
just in time lol. I'm at 34k miles. I need a stock intake badd. Anyone wanna sell or lend one?
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