Immobilizer, code telling me that my key was not recognized?

2007 HONDA ACCORD
160,000 MILES • 1.2L • 4 CYL • 2WD • AUTOMATIC
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SUSAN_PENTZ
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I was driving and the car shut down. When I tried to restart, I got the code telling me that my key was not recognized. I tried two spare keys, same message. Do I pay to get my keys reprogrammed, or is this possibly an electrical issue that is going to happen again?
Jul 7, 2025 at 1:41 PM
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STRAILER
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Yep, I have seen the immobilizer control unit go bad and not see the key code frequency. Here is the part you need, they get old and stop working, like me lol. Check out the images (below). Please let us know what happens.
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Jul 7, 2025 at 5:49 PM
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SUSAN_PENTZ
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Is this what I need?
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Jul 8, 2025 at 5:22 PM
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STRAILER
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Yes that was the part I replaced, the first image. If you want to be sure I would do a CAN scan which it should have a code for. Here is a video to help see.

https://youtu.be/u-4syLc-ifQ

This is a common problem, this is what usually fixes it.
Jul 9, 2025 at 5:41 PM
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SUSAN_PENTZ
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Thank you so much. I looked up how to replace that part, and it looks pretty easy. I sure hope so!
Jul 9, 2025 at 6:49 PM
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STRAILER
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Yep, it is not too bad, let me know if you run into problems and I can help walk you through them. Please upload images so I can see.
Jul 10, 2025 at 9:28 AM