It sounds like the immobilizer unit has failed. That is a dealer repair. However, here is the procedure and a picture of the immobilizer if you want to try it yourself.
Remove the dashboard lower cover.
Remove the steering column covers.
Disconnect the 7P connector (A) from the immobilizer control unit-receiver (B).
Remove the two screws and the immobilizer control unit-receiver from the ignition key cylinder (c).
Install the immobilizer control unit-receiver in the reverse order of removal.
After replacement, rewrite the unit with a Honda PGM Tester, then check the immobilizer system.
Image (Click to make bigger)
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Saturday, January 2nd, 2021 AT 10:28 AM