04-15-2021, 05:05 PM | #1 |
Owning SSes for 50 Years
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SOLVED: P2101 CEL
I have been experiencing the P2101 CEL on my supercharged Camaro recently. It occurs when at WOT and just at about 6k rpms. The engine loses power and actually shuts down. Pull to the side of the road, turn the engine off and wait a minute or so and it will restart and drive as normal. Dash shows the CEL and later confirms it's the P2101 which refers to an issue with the throttle body. One expert thought the throttle body motor wasn't strong enough to open the plate wide enough to allow enough air into the supercharger. If you reset the code it doesn't re light until you drive it hard at 6k rpm.
I happened to have a Vmax throttle body for the car and installed it with no change. I called Katech tech support hoping they had some wisdom on the issue and they can't suggest a fix. I just now have tried to contact Pete Incaudo of Vmax to see if he might have some thoughts on a fix. Camaro6 has tons of experience with every issue possible on our cars. Just wondering if anyone might have some words of wisdom.
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The new ride: 2023 Camaro, LT1, Sharkskin Grey
Previous Performance Cars: 1966 Chevelle SS 4M, 2010 Corvette 6M 1968 Dodge Charger R/T Auto 2012 1SS 6M 1982 Corvette Auto 2010 1SS 6A 1984 Corvette Auto 2016 2SS 8A 1999 Camaro Auto 2017 HBM 1SS 1le 2002 C5 Corvette 6M 2018 2SS 2006 Corvette Auto 2023 Camaro LT1 Last edited by ParisTNDude; 04-20-2021 at 07:18 AM. |
04-15-2021, 05:18 PM | #2 |
Drives: 2023 ZL1 Vert M6 "Sharky" Join Date: Mar 2020
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2023 Camaro ZL1 Vert TR-6060 Sharkskin "Sharky"
Firecracker Red Wrangler Willys, 3.6L eTorque, 850RE 8 speed automatic, 25W Willys package, Technology Group, Convenience Group (aka $600 garage door opener), Cold weather Group, Trailer Tow and HD electric group with AUX switches, 3 piece black freedom top. |
04-15-2021, 05:19 PM | #3 |
Drives: 2023 ZL1 Vert M6 "Sharky" Join Date: Mar 2020
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2023 Camaro ZL1 Vert TR-6060 Sharkskin "Sharky"
Firecracker Red Wrangler Willys, 3.6L eTorque, 850RE 8 speed automatic, 25W Willys package, Technology Group, Convenience Group (aka $600 garage door opener), Cold weather Group, Trailer Tow and HD electric group with AUX switches, 3 piece black freedom top. |
04-15-2021, 06:53 PM | #4 |
Drives: 2011 2SS/RS LS3 Join Date: Nov 2011
Location: Torrance
Posts: 14,426
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Put the stock throttle body back on and see if it still happens...if not, then.....etc.
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04-16-2021, 11:40 AM | #5 | |
Owning SSes for 50 Years
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P2101
Quote:
I'm going to call Edelbrock and see if they have experienced this issue with other Camaros...I can't be the only one who is having the problem since mine is a typical install. Thanks, man...I appreciate it.
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The new ride: 2023 Camaro, LT1, Sharkskin Grey
Previous Performance Cars: 1966 Chevelle SS 4M, 2010 Corvette 6M 1968 Dodge Charger R/T Auto 2012 1SS 6M 1982 Corvette Auto 2010 1SS 6A 1984 Corvette Auto 2016 2SS 8A 1999 Camaro Auto 2017 HBM 1SS 1le 2002 C5 Corvette 6M 2018 2SS 2006 Corvette Auto 2023 Camaro LT1 |
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04-16-2021, 01:57 PM | #6 |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
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Good idea to check with edelbrock or a tuner.
This is a mismatch error. The throttle body is commanded to open to a certain position. The actual position reported by the sensor has to be within a certain range that agrees with the commanded position. If the two don't agree, you get p2101. It is possible the airflow or vibration is moving the throttle plate causing a mismatch. It may be possible to reprogram the tolerance range for the two parameters to agree. |
04-16-2021, 04:08 PM | #7 |
Drives: 2016 2SS Convertible Join Date: Dec 2019
Location: SE Michigan
Posts: 576
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Mass Airflow Sensor issue? If using a NA MAS on a SC car it's likely not playing nice with the ECU.
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2016 2SS Convertible
Hyper Blue/Ash Gray A8 Magnetic Ride Control Dual Mode Exhaust 2019+ version Split Spoke Silver Wheels Navigation Silver Rally Stripes |
04-16-2021, 04:12 PM | #8 |
Drives: 2017 Camaro 2SS Join Date: Mar 2019
Location: Lakeland, Florida
Posts: 416
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So you didn't update the tune after the TB install? Also, are you running a spacer between the TB and inlet?
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Gary
2017 2SS A8 White, Bolt-Ons, Prayed Upon |
04-20-2021, 07:12 AM | #9 | ||||
Owning SSes for 50 Years
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SOLVED!!!
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PROBLEM SOLUTION: Graham Behan (Google him) who designed the LT5 ZR1 engines of the mid nineties and worked for Lingenfelter for many years as their chief engineer, and was a Chevy consultant on the LS3 development program. He now lives and works in my neck of the woods. He helped install the SC and altered the tune after I installed the LT4 injectors and high performance fuel pump. Yes, I know that voided my Edelbrock warranty. I've known Graham for some time. Anyway, when all else failed, I called him a while back and told him the issue. He had been pondering the possible fixes and developed another edit to my Edelbrock tune for the car. So, I took it to him yesterday and he hooked up HP tuners to my Camaro's data port installed the new tune boom!...fixed. ctriz's post above was right on. Because I'm not savvy on the tuning stuff, I can only tell you that he edited the tune where an event occurs at 6,000 rpms designed to shut the engine down if the parameters of the ECU and throttle body aren't in sync. The final result is that my Camaro is now a beast! Graham is still working and is internationally known as the LT5 guru. He rebuilds and modifies LT5 engines and is a consult for many of the LT5/LS3/LT1 performance shops in the US. If you think you need his advice, PM me and I can ask if he minds giving a phone number out.
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The new ride: 2023 Camaro, LT1, Sharkskin Grey
Previous Performance Cars: 1966 Chevelle SS 4M, 2010 Corvette 6M 1968 Dodge Charger R/T Auto 2012 1SS 6M 1982 Corvette Auto 2010 1SS 6A 1984 Corvette Auto 2016 2SS 8A 1999 Camaro Auto 2017 HBM 1SS 1le 2002 C5 Corvette 6M 2018 2SS 2006 Corvette Auto 2023 Camaro LT1 |
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04-20-2021, 12:18 PM | #10 |
Drives: '17 2SS convertible'20 Yukon Denali Join Date: Nov 2011
Location: Cedar Park, Texas
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Glad you got it fixed. Interesting story.
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Richard
2017 2SS SIM convertible, A8, NPP, MRC, 56R wheels, GM CAI, Diode Dynamics Side Markers Delivered: 08/15/2016 #TeamBeckyD |
03-18-2024, 04:32 PM | #11 |
Drives: CT5 BW Join Date: Feb 2024
Location: ATL
Posts: 6
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Any chance anyone has the actual solution for this? My car just started doing this around 6200 RPM.
Any help would be greatly appreciated. |
03-18-2024, 08:17 PM | #12 |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
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