2012 VW Passat P2450 code (intermittent)

Question

I keep getting the P2450 code intermittently after a reset.
I've replace the purge solenoid valve (and confirmed the new valve is working)
I've replaced the LDP.
I checked all of the evap lines and verified no leaks.
I checked all electrical connections and found no issues.
I confirmed all fuses are good.
I checked the charcoal cannister for clogs and leaks.

Any idea what the issue is or what I should check next.

The original issue was a high voltage on the LDP (code P2401) and the fix was to replace the LDP.