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Old 05-26-2010, 05:56 PM   #1
ChargerIon
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2005 ION-2 Quad Coupe
Wrench Error P1516

I had the "engine light" come on the other day. I plugged in the computer and this code came up (P1516).

Description:
manufacturer control speed
Idle speed control
Aux imputs

After looking up the code on the Actron website, it broke it down as:

Throttle actuator control module (TAC)
Throttle actuator position performance

Funny thing is., I cleared the code out, and the "engine light" hasn't come on again since. The car drives perfect.
Any ideas why on this would come on??
And if it does happen to pop up again., I'm guessing replacing the "TAC" wouldn't be a "affordable" replacement. That s**t just SOUNDS expensive.
I'm just hoping that kind of thing is covered under my extended warranty.

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Old 05-26-2010, 07:06 PM   #2
2006 ion2
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2007 ION-2 Sedan
Default Re: Error P1516

it's your gas pedal. you can try working the connector on the pedal and cleaning it with sensor cleaner (make sure you let it dry before plugging it back in). and yes, it is expensive.

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2003 Chevrolet venture lt

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Old 05-26-2010, 10:03 PM   #3
ChargerIon
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2005 ION-2 Quad Coupe
Thumbs Up Re: Error P1516

Quote:
Originally Posted by 2006 ion2 View Post
it's your gas pedal. you can try working the connector on the pedal and cleaning it with sensor cleaner (make sure you let it dry before plugging it back in). and yes, it is expensive.
Ok, awesome., I'll definitely give that a go.
Thanks so much for the reply!!

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Old 07-01-2010, 12:02 AM   #4
Scootimus
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2006 ION-3 Sedan
Default Re: Error P1516

I had the same error code come up on my wife's 06 Ion2. The car was idling high so I cleaned the MAF sensor and the Throttle body and that didn't do it. Instead of spending money replacing parts just for the hell of it I took it to the dealership. Saturn has extended the warranty on the PCM for 8 years/80,000 miles. Mine was bad so the dealer replaced it for free. Worth a try!

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Old 02-14-2017, 01:05 PM   #5
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Default Re: Error P1516

It's likely your electronic throttle control module. Buy one at the parts store and replace it. four bolts a couple of hose clamps and an electrical connection.

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Old 02-14-2017, 06:48 PM   #6
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2007 ION-2 Quad Coupe
Idea Re: Error P1516

Quote:
Originally Posted by Smiles488 View Post
It's likely your electronic throttle control module. Buy one at the parts store and replace it. four bolts a couple of hose clamps and an electrical connection.
It is best to look at the date of the previous post in the upper left corner before responding. You just responded to a post that was over six years old.

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2007 Ion 2 Quad Coupe 5-speed manual 170K miles
2007 Chevy Equinox LT 155K miles

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