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2007 base in limp mode

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Old May 17, 2025 | 06:51 PM
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Default 2007 base in limp mode

I turned my car on and it went into limp mode due to p0606 and p2138 codes. I replaced the throttle body because that’s what the symptoms were pointed to but that didn’t solve it. Unplugging and plugging the ecu fixed the issue for a couple starts and drives, however the problem still persists. Any help is much appreciated. It will be going to a corvette specialist soon for some other work I’m going to have done but want to see the general consensus of what it may be.
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Old May 17, 2025 | 07:13 PM
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Seems like you already threw a throttle body at this so I doubt you or your Corvette Specialist will be able to diagnose this…Corvette “Specialists” are usually good at just oil and brake changes…seems like your P0606 may be a bad ECM but you’ll need to check its powers or grounds…the 2138 can be a bad APP or even an ECM…best to find a diagnostic shop that has the advanced equipment to diagnose this.







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Old May 17, 2025 | 07:42 PM
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Originally Posted by C5 Diag
Seems like you already threw a throttle body at this so I doubt you or your Corvette Specialist will be able to diagnose this…Corvette “Specialists” are usually good at just oil and brake changes…seems like your P0606 may be a bad ECM but you’ll need to check its powers or grounds…the 2138 can be a bad APP or even an ECM…best to find a diagnostic shop that has the advanced equipment to diagnose this.






The guy I take mine to will plug in and see what the voltages are actually doing then throw in a test computer if he thinks it’s that. It was due for throttle body soon anyway just because of mileage. I just wanted to know of the possibilities before so I know what to potentially prepare for.
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Old May 17, 2025 | 07:45 PM
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I don’t know what a test computer is but whoever diagnoses this I hope knows what they are doing because you they may be throwing unneeded parts at this…good luck and BTW a TB is not changed due to mileage.

Last edited by C5 Diag; May 17, 2025 at 07:51 PM.
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Old May 17, 2025 | 08:07 PM
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He has spare computers for c5’s and c6’s maybe even c7’s. So he’ll throw one in and see if it solves the issue but if it doesn’t then he’ll know it’s not the computer. TB was already on the way out of the door. It worked but I could tell it wasn’t functioning as well as it had been. I was just holding off on replacing until it needed it and the symptoms had pointed towards it, but obviously it is something else.
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Old May 17, 2025 | 09:59 PM
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Any pedal commander or like item plugged into the gas pedal
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Old May 17, 2025 | 11:04 PM
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Not that I am aware of. I will have to check for the aftermarket wiring to be 100% sure.
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Old Jun 4, 2025 | 11:45 AM
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No pedal commander and not the ecm onto wiring
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