The Best No Codes But Check Engine Light Is On 2023. Web check engine light on but no code why is my check engine light on but no code? Now let’s explore the reasons why a code doesn’t show up.
There could also be an electrical short or blown fuse causing the light to come on for no reason. Web maybe that’s why your cel is not illuminating while the code is still there. After pressing erase/clear and waiting until you see a no codes message, you can turn off your vehicle and disconnect the scanner.
