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03 Honda CR-V. Check engine light just came on. O’reilys scanner gave a long list of readings... wondering if I should try bring it in or figure out a way to narrow it down beforehand.enter image description here

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  • Are you having any actual problems with the car, as in rough running, stalling, etc? What made you read the codes in the first place?
    – GdD
    Jun 22 at 7:04
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Two approaches:

  1. clear the list and see what comes back as some are often historical,

  2. check the fuels supply system thoroughly as all those are related - maybe there is one fault and it is triggering all the others.

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  • I found out it was the evap filter. Thank you for the information though, I didn’t know there was a history function to the read out that would retain issues from the past.
    – Robert
    Jun 24 at 19:40
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The list you got all look related to having a pressure leak in the fuel tank system, which is letting air in/out. A common reason for this is not putting on the gas cap tight enough, or a failed seal in the gas cap.

A good first place to start is checking/replacing the gas cap. Some shops may have a tool for testing gas caps.

If the car is driving fine, the main hazard with this issue is that some gas fumes could be escaping from the tank.

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