Engine Light
Mar 3, 2024 | 12:48 PM
Thread Starter
4th Gear
Joined: Mar 2024
Posts: 4
Likes: 0
Engine Light
I've had my car in the garage for a few months and started it periodically with no issues, I also keep it on a trickle. Took it out today and the engine light came on, took it to 2 AutoZone's to check for a code and neither were able to complete the diagnostics
Any ideas why its not letting the OBD readers complete a scan?
Mar 3, 2024 | 06:25 PM
Burning Brakes
Joined: Nov 2016
Posts: 1,192
Likes: 438
From: San Dimas CA
Possibly no power at the OBD port. Rodent damage?
Mar 3, 2024 | 07:01 PM
Thread Starter
4th Gear
Joined: Mar 2024
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Thanks but definitely no damage
I think it may be locked and need Chevy to check it
Mar 3, 2024 | 07:41 PM
Le Mans Master
Joined: Oct 2014
Posts: 8,673
Likes: 2,728
From: Atlanta GA
Quote:
Originally Posted by
Marc12
Thanks but definitely no damage
I think it may be locked and need Chevy to check it
ECMs OBD port are not locked , sounds like a comunications failure
Dave
Mar 3, 2024 | 09:56 PM
Joined: Mar 2001
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
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Get it to a dealer and have the techs diagnose what’s going on.
Mar 4, 2024 | 06:15 AM
Thread Starter
4th Gear
Joined: Mar 2024
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Thanks for the info
Taking it in to get checked
Mar 6, 2024 | 10:58 PM
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Often a cigarette lighter not working might be an indicator of a burned fuse which kills the 12V power to the OBD2 Port.
Mar 7, 2024 | 06:19 AM
Thread Starter
4th Gear
Joined: Mar 2024
Posts: 4
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Thanks, didn't realize that, I'll check it
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Mar 7, 2024 | 11:21 AM
Team Owner
Joined: Aug 2011
Posts: 21,590
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From: GREER SC
Z06
Quote:
Originally Posted by
aklim
Often a cigarette lighter not working might be an indicator of a burned fuse which kills the 12V power to the OBD2 Port.
I didn't know that. Thanks for posting it.
Mar 7, 2024 | 11:34 AM
Burning Brakes
Joined: Nov 2016
Posts: 1,192
Likes: 438
From: San Dimas CA
Quote:
Originally Posted by
aklim
Often a cigarette lighter not working might be an indicator of a burned fuse which kills the 12V power to the OBD2 Port.
Not in the case of a C7 Corvette!
Mar 7, 2024 | 01:21 PM
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Quote:
Originally Posted by
laserdude2215
Not in the case of a C7 Corvette!
Good to know that the C7 is not similar. What is the fuse that powers the obd2 port power?
Mar 7, 2024 | 08:35 PM
Joined: Oct 1999
Posts: 41,058
Likes: 9,821
From: Charlotte, NC (formerly Endicott, NY)
Quote:
Originally Posted by
aklim
Good to know that the C7 is not similar. What is the fuse that powers the obd2 port power?
Fuse 29 (10 Amp Fuse) in the 2016 schematics. Located in the underhood electrical center.
Bill
Mar 7, 2024 | 09:02 PM
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Quote:
Originally Posted by
Bill Dearborn
Fuse 29 (10 Amp Fuse) in the 2016 schematics. Located in the underhood electrical center.
Bill
Anything else rides on that circuit we can use to get a clue?
Mar 8, 2024 | 10:09 AM
Burning Brakes
Joined: Mar 2022
Posts: 1,220
Likes: 733
From: Phoenix, Arizona
Quote:
Originally Posted by
aklim
Anything else rides on that circuit we can use to get a clue?
As always, spot on info from Bill. Got me to looking at that circuit and it appears dedicated to the DLC, nothing else. Feel free to correct me if I missed something.