After a serious mistake by substitute goalkeeper Niklas Lomb, Bayer Leverkusen was just able to prevent another bankruptcy.
The Rhinelander saved themselves thanks to Edmond Tapsoba at FC Augsburg in the fourth minute of stoppage time to a 1: 1 (0: 1).
But the draw was a damper in the fight for the Champions League.
The FCA remained without a win against the Werkself in their 20th attempt in the Bundesliga.
Florian Niederlechner benefited from Lomb's faux pas, the early lead was not enough (5th minute).
Lomb copies Hradecky
Augsburg had to be content with a draw in front of national coach Joachim Löw in the relegation battle.
Leverkusen's deficit on a premier class place is already five points after only three wins from the last 13 competitive games.
The pressure on Bayer coach Peter Bosz, who succeeded current Augsburg coach Heiko Herrlich in Leverkusen two years ago, is increasing.
It started very badly for the Rhinelander.
After a back pass from Timothy Fosu-Mensah, Lomb, who was again called up for Lukas Hradecky, who was injured in the heel, kicked past the ball.
It's on my cap: Leverkusen's goalkeeper Niklas Lomb after his mistake
Source: dpa / Tom Weller
Niederlechner had no trouble slipping in from close range for the third goal of the season.
After the 27-year-old Lomb had not to blame any of the six previously conceded goals in just 135 minutes, this goal was entirely on his cap.
Memories were awakened of Lukas Hradecky's mistake in the first half of the season in a 2-1 win against Arminia Bielefeld.
At that time, the Finn wanted to knock out a back pass from Daley Sinkgraven, but touched the ball with his leg, produced an air hole - and the ball spun into the goal.
After Lomb's faux pas, there were hardly any highlights to marvel at in the Augsburg Arena for a long time.
Leverkusen clearly had more possession of the ball, but only sniffed the equalizer once before the break.
Patrik Schick hit the ball, pushed by Raphael Framberger, but not (41.).
Augsburg could have increased it to 2-0 through Niederlechner, but in a counterattack he missed the goal (27th).
The FCA officials who called in loudly were angry that Tapsoba was the last man to see only yellow and not red after a foul on Daniel Caligiuri (32nd).
As on Thursday in the Europa League in the 3: 4 defeat in Bern, when Leverkusen turned up after a 3-0 break, the Werkself came out of the dressing room more powerfully in Augsburg.
Driven by Moussa Diaby on the left wing, the guests made it repeatedly in front of goal.
But Augsburg prevented the equalizer with a lot of effort.
There was a lack of precision in their own counterattacks.
Follow-up immediately before the final whistle: Augsburg and Mads Petersen lost two points with the last action of the game
Source: AFP / CHRISTOF STACHE
In the duel between two disappointing teams in the second half of the season, the hosts hoped for a penalty kick after a whistle from referee Christian Dingert.
But Caligiuri had to hand the ball back to the referee because the video assistant had recognized Ruben Vargas' offside position in advance (55th).
It was exciting until the end, Tapsoba at least managed the draw.