Carp will have the hip looked at Monday when the team gets back to Seattle for the start of a nine-game homestand.
"I felt something pop," he said. "We'll know more tomorrow when I see the docs in Seattle. I felt something coming out of that stretch. I just didn't feel like I could run after that, so it was best to come out."
Carp did the splits reaching for a throw from third baseman Kyle Seager on a close play to get Angels rookie Mike Trout, but that's something he does regularly at first base.
"It was a routine stretch," he said. "I just slipped a little coming out of it. I felt a little discomfort. Something wasn't right. So we'll figure it out, get it fixed and get back out there."
Carp has been on the disabled list twice this season after spraining his left shoulder attempting a diving catch in the season opener in Tokyo. He's played just 49 games and is batting .206, but had hit .308 (16-for-52) over his last 15 games.
"Hopefully it's nothing serious," said manager Eric Wedge.
Carp is the only first baseman on the 25-man roster at the moment. Former starter Justin Smoak was sent down to Triple-A Tacoma three weeks ago and was hitting .220 with three RBIs and a .378 on-base percentage in his first 18 games for the Rainiers.
Second baseman Dustin Ackley moved over to first base in the sixth inning on Sunday, with Seager shifting to second and Chone Figgins taking over at third.