Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
Karl Chevrolet

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 05-06-2013, 04:02 PM   #1
v03z06
CF Senior Member
 
v03z06's Avatar
 
Member Since: Dec 2006
Location: Wappinger Falls NY
Default "Reduced Power" w/ NO codes and no communication

Hi all,
Now, I know there is a million threads on this but I really couldn't find one to match how mine is currently acting.

So here is some back story, I currently have the Traction control and ABS lights on (EBCM issue from what Ive read..it has gone off for days at a time and comes back). Anyway:

So today after 2 quick drives, nothing spirited or far, I start up the car and I get the Reduced Engine Power message. Power windows wont work, gas, oil pressure, and temp gauge do not work. (This causes a "low fuel" message as well because the gauge is reading empty.

I drove home which was 10 minutes way and the car ran 100% like normal. I turn the car on and off a few times (a thread I read said that could clear it out) but that didn't work. I then checked for codes and every module would just say "No Comm".

i left the car sit for about 10 minutes and now the car does not have the service engine soon/reduced engine power codes.

Any ideas on what I am looking at here? I'll admit the battery I have in their is junk and being replaced today or tomorrow, but could that trigger this issue?
v03z06 is offline   Reply With Quote
Old 05-06-2013, 04:27 PM   #2
Bill Curlee
Tech Contributor
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Support Corvetteforum!
 
Bill Curlee's Avatar
 
Member Since: Jun 2001
Location: Gales Ferry CT
Default

Well,,,,,,,,,, it one of the following things.

Your BCM is /was wet or damp,, OR Your Door Control Module or seat control module is having issues because of a poor connection in the connectors.

Seeing how your windows dont work, pop out the rubber accordion tubes between both doors and pull the door wiring harness connectors up and out of the door A pillar. Disconnect them and look for bent/spread and or damaged female pins. If the pins are spread, it can cause this to happen! TRUST ME! Bend them back so they make positive connection with the male pins.

Check you drivers seat wiring connector for damage. Same deal there!

Bet ya that fixes it!
Bill Curlee is offline   Reply With Quote
Old 05-06-2013, 04:28 PM   #3
Bill Curlee
Tech Contributor
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Support Corvetteforum!
 
Bill Curlee's Avatar
 
Member Since: Jun 2001
Location: Gales Ferry CT
Default

SHORT CUT! Open the doors and SHAKE the crap out of the rubber tubes. It sometimes causes the issues to go away TEMPORARILY.
Bill Curlee is offline   Reply With Quote
Old 05-06-2013, 04:32 PM   #4
v03z06
CF Senior Member
 
v03z06's Avatar
 
Member Since: Dec 2006
Location: Wappinger Falls NY
Default

wow thanks let me check this out...could just an issue with the doors cause all these other "no communications" though? Everything else was showing No Comm, PCM, HVAC, etc. etc.
v03z06 is offline   Reply With Quote
Old 05-06-2013, 05:24 PM   #5
Bill Curlee
Tech Contributor
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Support Corvetteforum!
 
Bill Curlee's Avatar
 
Member Since: Jun 2001
Location: Gales Ferry CT
Default

Yup!!!!!!!!!!
Bill Curlee is offline   Reply With Quote
Old 05-06-2013, 05:27 PM   #6
v03z06
CF Senior Member
 
v03z06's Avatar
 
Member Since: Dec 2006
Location: Wappinger Falls NY
Default

Quote:
Originally Posted by Bill Curlee View Post
Yup!!!!!!!!!!
That's incredible lol thanks again!!!
v03z06 is offline   Reply With Quote
Old 05-06-2013, 05:31 PM   #7
Bill Curlee
Tech Contributor
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Support Corvetteforum!
 
Bill Curlee's Avatar
 
Member Since: Jun 2001
Location: Gales Ferry CT
Default

When my 02 Z had this issue it stranded me 200 miles from home on a business trip. It would CRANK but not run. The only way that I quickly figured it out was; It was hot out and I tried to roll down the drivers window.... It wouldnt work but when I opened the door, the lights on the door panel started working and I was able to get the engine to run.

I had 2 badly spread female pins in the power connector.
Bill Curlee is offline   Reply With Quote
Old 05-06-2013, 05:34 PM   #8
Bill Curlee
Tech Contributor
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Support Corvetteforum!
 
Bill Curlee's Avatar
 
Member Since: Jun 2001
Location: Gales Ferry CT
Default

The bad pins cause the module to turn ON AND OFF rapidly and that somehow corrupts the serial data buss that ALL the modules are connected to.
Bill Curlee is offline   Reply With Quote
Old 05-06-2013, 05:34 PM
 
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page "Reduced Power" w/ NO codes and no communication
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
So fed up with electrical gremlins...codes within 03BLUDEVLz06 C5 Scan & Tune 2 02-02-2014 02:26 AM
98 C5 computer problems? ehuron C5 Tech 22 12-29-2013 11:03 PM
reduce power message !!! 08 z what to look for SBMVP16 C6 Z06 Discussion 7 09-29-2013 05:23 PM
Can a tune put the car into reduced power mode? Jay-rod C5 Scan & Tune 1 05-07-2013 02:50 PM
C5 Reduced engine power, service traction control? rjex09 C5 Tech 7 01-30-2013 10:19 PM



Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 11:56 PM.


Emails & Password Backup