He bogeyed No. 14 and then took a penalty stroke on the par-four 15th after driving into the ice plant. That led to a double bogey.
He also bogeyed No. 17 but still walked to the 18th hole with a four-shot lead.
Last year, Kyle Stanley blew a three-shot cushion at the 72nd hole and lost the tournament in a playoff to Snedeker.
Woods wasn't going to blow a four-shot lead. He drove a fairway wood into the rough before hitting a safe layup on his second shot.
Stanley, last year, spun his third shot off the green into the water.
Woods had 121 yards left and used a nine-iron to reduce the spin on the ball. He left his shot well above the hole, away from the water, and two-putted for an easy par.
Woods' victory moves him one closer to Snead's PGA record. Woods, who just turned 37, has won a startling 27% of his PGA starts (75 out of 280).
He won at Torrey Pines for the seventh time on the PGA Tour, equaling the number of victories he has scored at Firestone and Bay Hill. Woods also won his 14th and most recent major title, the 2008 U.S. Open, at Torrey Pines, meaning he is now the first PGA player to win eight times on the same course.
Woods also won six junior worlds in the San Diego area.
"For some reason I've always done well here," Woods said. "I don't know. I feel comfortable down here."
Television sponsors and tour officials get very comfortable whenever Woods wins, and even the competitors get caught up in the buzz. "The crowds are just different when he's around," Teater, the co-runner-up, said of Woods.
Woods has never lost his coldblooded lust for victory. "I'm trying to beat everyone in this field, and that hasn't changed and it won't change," he said. "That's the mentality I have."
And yet, opposing players welcome him back to the victory circle like a thief to a jewelry store?
"Yeah, it's great for the game in general," Teater said of Woods' success. "Not only us, but everybody that plays it. We all grew up watching him. We all want to give him a run for his money."
Monday's win added $1,098,000 to Woods' bank account.
The victories don't come as often as they did. Woods: "I'd like to win eight, nine times a year . . . that's not a bad thing."
Even after all these years, in the midst of an almost five-year major drought, Woods has proved he's still a money player.