Jay-Z’s 40/40 Club was shut down for a slew of health-code violations just a day after its celebrity-drenched $10 million relaunch — and now it faces a dreaded “C” grade, The Post has learned.

An inspector found perishable food at dangerously warm temperatures inside the walk-in refrigerator and discovered “hot” food left out on the counter on Thursday, Health Department sources said.

A worker was also seen mixing salsa with his bare hands.

The refrigerator was at a rancid 60 degrees instead of 41 — jeopardizing the safety of 50 pounds of raw chicken wings, five pounds of raw shrimp and 100 turkey burgers, the sources said.

– Reported by Philip Messing and Kevin Fasick of the New York Post

UPDATE FROM TMZ: But Ron Berkowitz, a rep for the club, tells TMZ the motor in one of the refrigerators blew just moments before the health inspector arrived … causing the temperature in the fridge to rise. Berkowtiz says the staff identified the problem immediately and had no intention of serving the food from that fridge. Berkowitz says the fridge was fixed by noon the next day and the club was permitted to re-open.