It's all defense in the second half after an all-offense first half.
The only points in the second half are Justin Houtson's fourth-quarter safety of Deshaun Watson. As the Texans are driving for a go-ahead score inside the Colts 5 in the closing minutes, the Colts recover an errant snap to ensure the win.
With Tennessee's loss to Cleveland, the Colts and the Titans are tied atop the AFC South at 8-4. The Colts visit the Las Vegas Raiders next weekend.
Philip Rivers passes for 285 yards and 2 TDs, Jonathan Taylor rushes for 91 yards and T.