Hi,
The connector you are referring to was on pre-1995 Honda vehicles (OBD1). There was a diagnostic two-terminal blue connector used to trigger the code display mode, which is located on the passenger's side, under the dash.
After 1994, the vehicles were equipped with an OBD 2 system that requires a scan tool to retrieve codes.
Because the vehicle is newer, I recommend scanning the can-bus. If there are issues with ABS faults, the codes will be stored in the ABS module. A traditional scan tool won't retrieve codes from that module. Here is a link explaining how it is done:
https://www.2carpros.com/articles/can-scan-controller-area-network-easy
You could try at a local parts store because most will scan for free, but most times they won't have a scanner that can read the can-bus.
Let me know if this helps or if I can help in any way.
Take care,
Joe
Tuesday, May 3rd, 2022 AT 7:27 PM