Woods was unable to improve on the one-over 72 he shot on Thursday morning at Valhalla Golf Club. At seven-over 149, Woods was tied for 134th out of 155 in the field when the second round was suspended due to darkness.
Woods, 48, has not made the cut at the PGA Championship since 2020, when he tied for 37th. It was the 15-time major champion's first start since making his record 24th straight cut at the Masters last month at Augusta National.
After his round, Woods said he feels better physically than he did a month ago but he needs to get more reps before the US Open next month at Pinehurst No. 2.
"I need to play more," Woods told reporters.
"Unfortunately, I just haven't played a whole lot of tournaments, and not a whole lot of tournaments on my schedule either.
"Hopefully everything will somehow come together in my practice sessions at home and be ready for Pinehurst."
Woods went seven-over in a three-hole stretch on Friday. At the second, he had a shot fly from one greenside bunker to another before getting on the green in five strokes and finishing with two putts.
He was in the sand again at No.4 when his third shot failed to get up onto the green. His first attempt to get out of the green caught the upper lip and the ball rolled back down to his feet. Again, it took him five shots to land on the green.
Woods went on to make back-to-back birdies on holes seven and eight before they were erased by consecutive bogeys on 11 and 12. He finished his week with a birdie at the par-five 18th hole.
"I need to clean up my rounds," he said. "But also -- physically, yes, I am better than I was a month ago. I still have more ways to go, lots of improvement to go physically, and hopefully my team and I can get that done pre-Pinehurst and going into it."
Woods was playing at the site of his 2000 PGA Championship victory -- the third leg of the "Tiger Slam," which saw him win all four major championships consecutively from 2000-01.