code 19561 valve for intake manifold flap

have the technology; lack the knowledge! HELP! valve for intake manifold flap

Code 19561, valve flap for intake manifold; open or short to ground. I got this check engine light code immediately after changing the engine thermostat and changing the coolant?
Did I get moisture (coolant) in an electrical connector?

Cel

You must have knocked wiring to N239 loose when replacing thermostat.
19561/P3105/012549 - Ross-Tech Wiki