Bayern are steaming towards a 10th straight league title after Noah Sarenren Bazee netted for Augsburg in the 78th minute to hold Dortmund to a 1-1 draw.
Thorgan Hazard's first-half goal gave Dortmund the lead in Bavaria until Augsburg's pressure paid off and substitute Bazee headed in off the crossbar.
Bayern earned a 1-0 win at Eintracht Frankfurt on Saturday after Germany winger Leroy Sane came on to score the late winner.
Earlier, RB Leipzig earned a third straight away win in a week as Christopher Nkunku's late goal sealed a hard-fought 1-0 victory at Bochum to keep his club fourth in the table.