Johnson, appearing on MSNBC, shot down the notion that Sanchez is "lazy," as one unnamed teammate described the quarterback.
"I've never heard that," Johnson said. "He's the first guy in the building every morning and the last guy to leave."
Other teammates, such as Jets Pro Bowl center Nick Mangold, have also come to Sanchez's defense.
Johnson agreed that there was too much inner turmoil inside the Jets' locker room this season. That is something the team is working this offseason to clean up. New York hired new offensive coordinator Tony Sparano this week, in large part, because he is widely respected in the NFL by players and coaches.