Former NYPD drug-scandal cop Michael Dowd is in trouble with the law again.

Dowd, 55, was busted in Suffolk County Tuesday on two counts of violating a protection order after twice sneaking back into hotel rooms with a girlfriend he allegedly assaulted in December, authorities allege.

Dowd had been free on $75,000 bail on the East Islip domestic-violence case.

He spent 12 years in prison as the head of a crew of cops who shook down Brooklyn coke dealers in the ’80s and ’90s. His exploits were detailed in the 2014 documentary “The Seven Five.”