Herron fumbled twice -- losing one -- in what was an impressive offensive performance by the Colts in their 26-10 wild-card victory over the Cincinnati Bengals on Sunday.
"You can't do it. You can't do it," coach Chuck Pagano said. "He had a great day yesterday minus the two times he put the ball on the ground. He understands it, I understand it, everybody in Indy understands it. Everybody in this room understands that you can't put the ball on the ground and there's nothing more precious than the football and possessing the football. So we'll continue to address it with him. He's a grown man, he understands it and he understands the ramifications that come with it. He's going to continue to work at it."
Pagano pulled Herron out of the game after his second fumble and gave Zurlon Tipton some snaps while the coaching staff addressed his fumble issues. But Herron returned to the game later because the last thing the Colts wanted to do was completely take away his confidence.
Herron will be back in the starting lineup against Denver on Sunday because he gave the Colts something they've missed since Ahmad Bradshaw went down with his fractured fibula in the middle of November. Herron ran for 56 yards on 12 carries and had 85 yards on 10 receptions.
"He's going to do his part and he'll get it fixed," Pagano said.
Herron, who began the season as the Colts' third running back, added, "It's just one of those things you've got to move forward. You've got to let it go and just got to keep playing, and try to keep going out there trying to make plays."