Trout was hurt trying to make a diving catch in the fourth inning on Sunday in a 13-7 victory over Texas. He remained in the game and later hit a grand slam.
But Trout's wrist was bothering him on Tuesday, and he sat out Tuesday's 10-5 loss to the Astros.
An MRI revealed no structural damage. He is listed as day-to-day.
Trout leads the majors with 31 homers and is hitting .315 with 64 RBIs.
Wednesday's loss dropped the Angels one game back of the Astros for the AL West lead, and Los Angeles will try to avoid being swept in Thursday's series finale.
Information from The Associated Press was used in this report.