Les Parisiens very nearly suffered their first reverse of 2012 as they trailed going into stoppage time, but for the fourth match running, they scored after the 90-minute mark
After a goalless first half, the home side moved into the lead when Pierre-Alain Frau struck against his former side early in the second period, but Javier Pastore quickly levelled. With 20 minutes remaining, a corner proved decisive for Caen, with Thomas Heurtaux rising highest to head neatly into the net. In stoppage time, however, Christophe Jallet scored a cracking equaliser.
In the opening half hour, the home side pinned their opponents back impressively and forced a series of saves from Salvatore Sirigu, who denied Frederic Bulot, while Livio Nabab was also wasteful. Frau went closest for Caen, though, hitting the bar after just four minutes.
Before the break, PSG had hinted that they would take a foothold in the match, but seven minutes after the restart, the hosts moved into the lead. Romain Hamouma combined with Nabab to drill a cross into the box and produce the opening goal for Frau, who scored at the second attempt
Only 120 seconds later, the league leaders were level thanks to a fortunate goal from Pastore, who dribbled past three players before a clearance cannoned off him and bounced into the net.
Kevin Gameiro, who was partnered with Guillaume Hoarau in attack, went close to putting Carlo Ancelotti’s men into the lead, but his effort clipped the bar.
PSG never really got a firm grip on the match, and 20 minutes from time they were behind again as Bulot’s corner was headed home by Heurtaux; the ninth goal from a set piece les Parisiens have conceded from their last 12 games.
And it was nearly another with quarter of an hour left, as Faycal Fajr’s free kick nearly caught out Sirigu but ended marginally the wrong side of the post. From a similar situation soon afterwards, the young midfielder drew a save from the goalkeeper.
The guests didn't look like drawing level, but in injury time, a late burst down the right ended with Jallet hammering his shot into the roof of the net to steal an undeserved point.
Les Parisiens have now scored after the regulation 90 minutes in each of the last four matches, and this comeback leaves them two points clear of Montpellier at the top of Le Championnat, with the second-placed side reduced to nine men as they were defeated by Nancy.