Codes P1457 and P1456?

The EVAP normally operates under specific engine loads and temperatures. You don't want the purge open at idle or conditions where the extra fuel would cause problems. I would think you could hear the valve, but it depends on how it's damped internally. I also found this in the Honda section. You replaced the unit, but it might have damaged the PCM driver as well. That may be why you don't hear it, the driver is fried, and it isn't operating.

03-001
January 28, 2003
Applies To:
MIL Comes On With DTC P1457: EVAP Bypass Solenoid Valve Failure

SYMPTOM
The MIL is on, and DTC P1457 [leak detected in EVAP control system (EVAP control canister system)] is set.

PROBABLE CAUSE
The EVAP bypass solenoid valve can fail due to corrosion. The solenoid valve may get water inside. If the water contains road salt, the solenoid windings could corrode, causing the valve to fail. In a few rare instances, the corrosion could be severe enough to cause an internal short in the solenoid valve, which could damage the ECM/PCM. If this happens, both the bypass solenoid valve and the ECM/PCM would need to be replaced.

CORRECTIVE ACTION
Test and, if necessary, replace the EVAP bypass solenoid valve. Replace the ECM/PCM if needed.

Yes it would be a driver transistor like that. You could probably repair it if you are good at board level repairs.

If you want it tested and repaired I would use someone who has the tools for those repairs. There are a few. Maic Salazar https://www.maicsalazardiagnostics.com/ is one who might not have a backlog. Give him a call and see what he says. He has a YouTube channel showing his work. PCM=ECM behind the right kick panel.

Send the original, that way you know all the rest works. There are a few places that do repairs these days, mainly because the parts are either hard to find or it's some odd application.

Sounds like a plan. Will wait to hear the results.

Sounds great. Maic does good work. Will hold off on a celebration until you get it up and running all the way.