PSG now have 45 points from 19 matches, two points ahead of Lens, who play their big match against Marseille on Sunday night.
Auxerre are sinking further down the table in 17th place with 12 points, according to the French Ligue 1 website.
PSG immediately put pressure on Auxerre's defense as soon as the match started, and created a golden opportunity in the first minute through Bradley Barcola's shot from inside the penalty box, but Auxerre goalkeeper Donovan Leon was alert to parry the ball.
