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Old Jul 23, 2007 | 11:09 PM
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Default Check Engine Light!

I'm getting this code
Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance
what do I have to do to fix this? do I have to change Maggie's throttle or what? please help
can anyone explain this code for me? I know it's the throttle but what is the problem? sensor?
I also saw "UNKNOWN" code.
Thanks in advance!
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Old Jul 23, 2007 | 11:22 PM
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What's the Code number, I'll look it up tomorrow when I get back to the shop.
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Old Jul 23, 2007 | 11:28 PM
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P0121
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Old Jul 23, 2007 | 11:38 PM
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Originally Posted by Dashti
I'm getting this code
Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance
what do I have to do to fix this? do I have to change Maggie's throttle or what? please help
can anyone explain this code for me? I know it's the throttle but what is the problem? sensor?
I also saw "UNKNOWN" code.
Thanks in advance!
I have been getting that code over and over for about 6 months now. My tuner has no idea how to get rid of it. I wish you luck!

Greg
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Old Jul 24, 2007 | 12:13 AM
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Default P0121

I have a post (P0121) later in this section. I also have this code show up also. I have a vortech supercharger and I took it on a trip of about 3600 miles with no problems. Then I was driving and accelerated hard down a ramp and in second gear about 5000 rpm the power just shut off. I shifted and everything was fine. The next time I took it for a trip the same thing happened. Last two times nothing. The check engine light never came on. My tuner asked me to take it to a dealer and see what codes came up. And P0121 came. I Called my tuner and he's checking it out. Have you suffered the same loss of power that I experienced. According to the code it says if prediced air flow and predicted map combined are outside a calibrated range for more than three seconds. ...under certain conditions the control module commands the engine OFF.
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Old Jul 24, 2007 | 12:13 AM
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Originally Posted by Muscles
I have been getting that code over and over for about 6 months now. My tuner has no idea how to get rid of it. I wish you luck!

Greg
In HPTuners, under Engine Diagnostics "General" table, just set Min ECT to 492, and Max ECT to 493. Or any combination of tempatures within 1 degree of eachother i.e., Min ECT 131, Max ECT 132. Kind of like how one would set the Misfire Test in LS1's so that you didn't have to delete the code to prevent an SES light.
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Old Jul 24, 2007 | 12:42 AM
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Originally Posted by dnel12
I have a post (P0121) later in this section. I also have this code show up also. I have a vortech supercharger and I took it on a trip of about 3600 miles with no problems. Then I was driving and accelerated hard down a ramp and in second gear about 5000 rpm the power just shut off. I shifted and everything was fine. The next time I took it for a trip the same thing happened. Last two times nothing. The check engine light never came on. My tuner asked me to take it to a dealer and see what codes came up. And P0121 came. I Called my tuner and he's checking it out. Have you suffered the same loss of power that I experienced. According to the code it says if prediced air flow and predicted map combined are outside a calibrated range for more than three seconds. ...under certain conditions the control module commands the engine OFF.
Yes, I feel the car is just dead! I lost a lot of power
I'm changing my MAP today and will see what happen next!
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Old Jul 24, 2007 | 12:44 AM
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Mike,
is this affecting the horsepower? just curious, I think yeah.. correct?
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Old Jul 24, 2007 | 11:02 AM
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Originally Posted by Dashti
Mike,
is this affecting the horsepower? just curious, I think yeah.. correct?
Yep
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Old Jul 24, 2007 | 12:01 PM
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Old Jul 26, 2007 | 03:14 PM
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Default solution to P0121

I posted a similar response in another thread. I took my 06z516mn to Doug at Doug Rippie Motorsports and he spend several minutes with the programmer and the problem is fixed.
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Old Jul 26, 2007 | 07:48 PM
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Originally Posted by dnel12
I posted a similar response in another thread. I took my 06z516mn to Doug at Doug Rippie Motorsports and he spend several minutes with the programmer and the problem is fixed.
Still good???

Randy
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Old Jul 26, 2007 | 09:11 PM
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Was good all 200 miles home, will give it another run on Satuday.
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Old Jul 26, 2007 | 10:14 PM
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so are you telling me to re-tune the car?
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Old Jul 26, 2007 | 11:54 PM
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I'm not sure what he did. It only took a couple of minutes to complete. I imagine he reset some perameters. I started a thread called P0121 and Straightline tuning from IL gave me what he felt was a fix. If you review that thread it might solve the problem. If that is what Doug Rippie did, I'm not sure. I didn't ask. All I know is on the way home I got on whenever I could and didn't experience any problems.
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Old Jul 27, 2007 | 01:03 AM
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I will read it, thank you dnel12
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Old Jul 28, 2007 | 12:01 PM
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Took it out on the back roads this morning. Ran it hard through the areas that triggered the P0121 code and absolutely no problems.
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Old Jul 28, 2007 | 12:34 PM
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great news! I'm taking it to my tuner to see what's going on.
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