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Old Mar 3, 2024 | 12:48 PM
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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?
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Old Mar 3, 2024 | 06:25 PM
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Possibly no power at the OBD port. Rodent damage?
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Old Mar 3, 2024 | 07:01 PM
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Thanks but definitely no damage
I think it may be locked and need Chevy to check it
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Old Mar 3, 2024 | 07:41 PM
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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
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Old Mar 3, 2024 | 09:56 PM
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Get it to a dealer and have the techs diagnose what’s going on.
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Old Mar 4, 2024 | 06:15 AM
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Thanks for the info
Taking it in to get checked
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Old Mar 6, 2024 | 10:58 PM
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Often a cigarette lighter not working might be an indicator of a burned fuse which kills the 12V power to the OBD2 Port.
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Old Mar 7, 2024 | 06:19 AM
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Thanks, didn't realize that, I'll check it
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Old Mar 7, 2024 | 11:21 AM
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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.
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Old Mar 7, 2024 | 11:34 AM
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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!
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Old Mar 7, 2024 | 01:21 PM
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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?
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Old Mar 7, 2024 | 08:35 PM
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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
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Old Mar 7, 2024 | 09:02 PM
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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?
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Old Mar 8, 2024 | 10:09 AM
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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.
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