Diagnostic Codes

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Codes, Diagnostic Codes

C5 Corvette Diagnostic Trouble Codes (DTCs) & Descriptions

Posted on April 29, 2020April 6, 2021 by Dino Behler Jr.

What is a Diagnostic Trouble Code (DTC)? A Diagnostic Trouble Code (DTC) is a systematic coding structure used by a Corvette to signal that an issue has occurred. Each DTC consists of one letter and four digits, such as B0605, and corresponds to a specific error/fault. When a component or system is not operating within…

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1990 to 1996 Corvette HVAC Diagnostic Codes

Posted on July 18, 2019September 24, 2019 by Dino Behler Jr.

1990 to 1996 Corvette models that are equipped with the C68 option code (Automatic, Electronic Air Condition) allow HVAC diagnostic codes to be read from the digital screen on the climate control panel. This feature is useful when attempting to diagnose issues with the A/C system. To learn more about entering the diagnostic mode and…

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