"Reduced Engine Power" 7 Codes... HELP!!!
Thread Starter
Pro
Joined: Apr 2001
Posts: 616
Likes: 0
"Reduced Engine Power" 7 Codes... HELP!!!
Ok, I checked the codes using the help in the forum tips and here's what I came up with..
10-PCM
P1515 H
P1516 H C
28-TCS
C1278 H
99-HVAC
B0338 H C
BO-RFA
U1096 H
U1064 H
U1016 H
[Modified by J99FRC, 7:31 AM 11/4/2001]
10-PCM
P1515 H
P1516 H C
28-TCS
C1278 H
99-HVAC
B0338 H C
BO-RFA
U1096 H
U1064 H
U1016 H
[Modified by J99FRC, 7:31 AM 11/4/2001]
Le Mans Master
Joined: Nov 2000
Posts: 7,294
Likes: 1
From: Coral Springs Florida
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
The "H" indicates a history of the code. The "C" indicates a cureent condition. You may try to erase the codes. There are instructions on how to do that in the tech tips section under erasing DIC codes. It really is pretty easy.The HVAC is the airconditioning and heating ,the PCM is your Power control monitor(drivetrain functions..engine and trans)The RFA is your radio.TCS is your Traction control/ Active handling.
Once the codes have been erased you may also disconnect the battery for a few minutes to reset the PCM.Sometimes this works. It really depends of the severity of the codes. I remeber seeing C5 Tech had a homepage with ALL the codes and there meaning.
Hopefully C4C5 specialist or C5 tech will answer your post. For now ,try my suggestion. I've been there ,I know how you feel.
Hope this helps..... :)
Once the codes have been erased you may also disconnect the battery for a few minutes to reset the PCM.Sometimes this works. It really depends of the severity of the codes. I remeber seeing C5 Tech had a homepage with ALL the codes and there meaning.
Hopefully C4C5 specialist or C5 tech will answer your post. For now ,try my suggestion. I've been there ,I know how you feel.
Hope this helps..... :)
Thread Starter
Pro
Joined: Apr 2001
Posts: 616
Likes: 0
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
Ok, I disconnected the battery for about 5 minutes, and nope, it acts like I never unhooked it.. Is their any way to RESET the computer by pulling a certain fuse??
Burning Brakes
Joined: Oct 2001
Posts: 1,191
Likes: 0
From: Palm Beach Shores, FL
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
Well if this is any help, this is what the codes mean:
P1515 Command vs Actual Throttle Position performance (PCM Module) -A
P1516 Command vs Actual Throttle Position performance (TAC Module) -A
C1278 TCS Temporarily Inhibited by PCM
B0338 Inside Air temp sensor open
U1096 Loss of Communications with IPC (No State of Health Message)
U1064 Loss Of Communication with DCM (No SOH Message Received -RFA
U1016 Loss Of Communication with PCM (No SOH Message Received -RFA
I have no clue what this all means. But I hope it helps.
P1515 Command vs Actual Throttle Position performance (PCM Module) -A
P1516 Command vs Actual Throttle Position performance (TAC Module) -A
C1278 TCS Temporarily Inhibited by PCM
B0338 Inside Air temp sensor open
U1096 Loss of Communications with IPC (No State of Health Message)
U1064 Loss Of Communication with DCM (No SOH Message Received -RFA
U1016 Loss Of Communication with PCM (No SOH Message Received -RFA
I have no clue what this all means. But I hope it helps.
Thread Starter
Pro
Joined: Apr 2001
Posts: 616
Likes: 0
Re: "Reduced Engine Power" 7 Codes... HELP!!! (oceanaire)
oceanaire,
Thanks buddy. I haven't a clue either.. Guess moday it's gonna be flatbedded to the nearest dealer.. :rolleyes:
I've tried disconnecting the battery, pulling #25 Fuse..... nothing helps...
Thanks buddy. I haven't a clue either.. Guess moday it's gonna be flatbedded to the nearest dealer.. :rolleyes:
I've tried disconnecting the battery, pulling #25 Fuse..... nothing helps...
Le Mans Master
Joined: Nov 2000
Posts: 7,294
Likes: 1
From: Coral Springs Florida
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
I just went through the tow thing. Check out this thread...
http://forums.corvetteforum.com/zerothread?id=175259
I'm sure all will be well. Be patient, I know your frustrated :sad:
http://forums.corvetteforum.com/zerothread?id=175259
I'm sure all will be well. Be patient, I know your frustrated :sad:
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Melting Slicks
Joined: Sep 2000
Posts: 2,756
Likes: 5
From: Satellite Beach, FL, USA
Re: "Reduced Engine Power" 7 Codes... HELP!!! (oceanaire)
There is a couple of quick things to check before going to the dealer.
1. Check the DLC star connection at the passenger footwell. If there is a bad or loose connection here, the different modules will not communicate with each other properly.
2. Pull off your RF tire and remove the access cover to allow access to the PCM and TAC. Check to see if there is any visible corrosion..
1. Check the DLC star connection at the passenger footwell. If there is a bad or loose connection here, the different modules will not communicate with each other properly.
2. Pull off your RF tire and remove the access cover to allow access to the PCM and TAC. Check to see if there is any visible corrosion..
Thread Starter
Pro
Joined: Apr 2001
Posts: 616
Likes: 0
Re: "Reduced Engine Power" 7 Codes... HELP!!! (vstella)
Thanks for all the advice.. Everything looks fine.. Tried unplugging all the connectors and they look good.. This should be covered under my factory warranty right??
Race Director
Joined: Feb 1999
Posts: 14,263
Likes: 1
From: DFW, Texas...2001 Millennium Yellow Z06
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
YEP, should be a warranty issue.....and since it is an emissions thing (i would guess the PCM would be considered an emissions system component) I think the warranty on it is longer????
let us know
thanks
let us know
thanks
Former Vendor
Joined: Apr 2001
Posts: 10,976
Likes: 21
From: FL
St. Jude Donor '13
Re: "Reduced Engine Power" 7 Codes... HELP!!! (Ram Air Tony)
"REDUCED POWER" and the 1516 code means that you have a fault with the "drive by wire"...A faulty TAC module and or faulty accelerator pedal (w/APP sensor) are the most common culprit.The TCS code simply means that the traction control was inhibited while the emissions fault was present...If you ever had a leaky battery,the TAC module is mounted under it :( ...Sounds like a trip to the dealer to pinpoint a diagnoses :yesnod:
Melting Slicks
Joined: Jun 2001
Posts: 2,219
Likes: 0
From: Burleson Texas
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
Man Jeremy, That sucks!
Have never had to have mine towed yet! Let me know how easy or difficult it is for them to get your lowered car on the flat bed.......
Good luck man!
Have never had to have mine towed yet! Let me know how easy or difficult it is for them to get your lowered car on the flat bed.......
Good luck man!
Pro
Joined: Sep 1999
Posts: 555
Likes: 0
From: Las Vegas NV
Re: "Reduced Engine Power" 7 Codes... HELP!!! (J99FRC)
C-5 TECH knows his stuff. I had this problem twice. Once for the pedal end and once for the throttle end. Guess what I also had a battery leak that screwed up something under it. Definately a trip to a good dealer. :flag
