Reduced Engine Power and P0223
07-15-2016, 05:01 PM
#1
Racer
Thread Starter
Reduced Engine Power and P0223
Hey guys, looking for some insight/help
My 2006 Z51 Ls2 is currently at the dealership and they are having no luck trying to figure out this code, I dont know the specifics of everything they have tested but they think the PCM is causing the issue, and recommended taking it to a performance shop to deal with the tune. I have HP tuners and I am the one that tuned it, the tune had not changed in this time period, but ive done multiple "write entire" but nothing has changed, the code instantly pops on.
Let me know your thoughts
My 2006 Z51 Ls2 is currently at the dealership and they are having no luck trying to figure out this code, I dont know the specifics of everything they have tested but they think the PCM is causing the issue, and recommended taking it to a performance shop to deal with the tune. I have HP tuners and I am the one that tuned it, the tune had not changed in this time period, but ive done multiple "write entire" but nothing has changed, the code instantly pops on.
Let me know your thoughts
07-15-2016, 07:47 PM
#2
Race Director
Member Since: May 2004
Location: Raleigh, NC
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St. Jude Donor '15
I'd try swapping out the throttle body and/or pedal assembly and see what happens first
Actually I'd try logging every throttle related PID I could find in HPT and see if there's anything weird going on that you can see first
Without knowing what they've done so far we're kind of in the dark
Doubt it's a tune issue; MAYBE if you screwed with the throttle map tables, but otherwise I highly doubt it
Actually I'd try logging every throttle related PID I could find in HPT and see if there's anything weird going on that you can see first
Without knowing what they've done so far we're kind of in the dark
Doubt it's a tune issue; MAYBE if you screwed with the throttle map tables, but otherwise I highly doubt it
07-26-2016, 02:46 PM
#3
Racer
Thread Starter
After fighting with the dealer about it being the ECU (mainly because i didnt want to pay for it if it didnt fix it), they let another tech diag it and he found a broken wire in the tb wiring harness.
07-27-2016, 02:42 AM
#4
Le Mans Master
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St. Jude Donor '13-'14-'15
Please list all your mods on your engine----- This can be a common code with certain mods----
ALSO have you tried to DELETE this code to read "not reported " and "no mill" if not try this 1st Often you will get false codes on a modded engine--- By deleting it as I mentioned this will determine if in fact it is a real code or a false code-----
If the reduced power mode comes back after deleting this code then let me know--and I will show you the next step to prevent it from coming back
PS before the code re appears after removing--does the engine run fine ???
ALSO have you tried to DELETE this code to read "not reported " and "no mill" if not try this 1st Often you will get false codes on a modded engine--- By deleting it as I mentioned this will determine if in fact it is a real code or a false code-----
If the reduced power mode comes back after deleting this code then let me know--and I will show you the next step to prevent it from coming back
PS before the code re appears after removing--does the engine run fine ???
03-12-2019, 09:13 AM
#5
1st Gear
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Hey guys, looking for some insight/help
My 2006 Z51 Ls2 is currently at the dealership and they are having no luck trying to figure out this code, I dont know the specifics of everything they have tested but they think the PCM is causing the issue, and recommended taking it to a performance shop to deal with the tune. I have HP tuners and I am the one that tuned it, the tune had not changed in this time period, but ive done multiple "write entire" but nothing has changed, the code instantly pops on.
Let me know your thoughts
My 2006 Z51 Ls2 is currently at the dealership and they are having no luck trying to figure out this code, I dont know the specifics of everything they have tested but they think the PCM is causing the issue, and recommended taking it to a performance shop to deal with the tune. I have HP tuners and I am the one that tuned it, the tune had not changed in this time period, but ive done multiple "write entire" but nothing has changed, the code instantly pops on.
Let me know your thoughts
I have the same problem on my 2012 C6 LS3, I swapped the pedal first and no luck, then I swapped out the throttle body back to the original and still the same thing, says P0223 code and "Reduced Engine Power" on my dash, today I'm going to check the pigtail on the Throttle position sensor see if theres any rips or splices and check the wires in the connection to make sure non are loose. I'll let you know how it goes