Ob2 port linking error I attached my simple scanner?

2006 HONDA CIVIC
200,000 MILES • 4 CYL • 2WD • AUTOMATIC
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JOELCOOL64
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Friends Honda check engine light came on. I attached my ob2 scanner and it gave me a linking error. I attached my simple scanner to see if it’ll power the scanner and it did. So I know I’m getting 12v to the scanner. I also replaced fuse number 23 (10A) in the engine fuse box and still getting the same linking error. I tested both my scanners on different cars and they both work fine. Not sure how else to fix the ob2 port.
Oct 3, 2024 at 3:48 AM
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STRAILER
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I would check the connector for corrosion which will hinder the connection, next there are two grounds for the connector. here is a guide to help you check them and the data port connector wiring diagrams which I have marked the wires to be tested.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Also, this video might help as well:

https://youtu.be/6Tlg3JmgNSQ?si=95VM5s5rLqieHze0

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Oct 3, 2024 at 10:40 AM
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JOELCOOL64
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I saw that video and that’s what made me add this question in the forum. Is there a location for the 2p CEL connector so I can at least get some codes as to why the check engine light is on?
Oct 4, 2024 at 4:40 AM
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STRAILER
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Did you check the grounds I pointed out in the wiring diagrams? Also, going over the PCM wiring diagrams I do not see a I do not see a 2p CEL connector on this car.
Oct 4, 2024 at 11:39 AM