The Cobblers had to settle for a draw in their crunch match at Wycombe Wanderers and remain in the Sky Bet League Two relegation zone with three games to play.
Northampton went ahead after 11 minutes at Adams Park when home keeper Matt Ingram dropped a Ricky Ravenhill cross over his own goal line.
But Aaron Pierre restored parity with a firm header six minutes later and honours ended even at 1-1.
Backed by more than 2,000 supporters, Northampton contributed little to a low-quality game and were perhaps fortunate to take a point from it.
Results elsewhere mean it is a case of ‘as you were’ in the fight to beat the drop but just three fixtures now remain, with Portsmouth at Sixfields next up for Chris Wilder’s side.
Town had made the better start to the game and got the goal their positivity deserved, albeit in somewhat fortuitous circumstances.
A first-time cross into the box by Ravenhill should have been taken with ease by Ingram but the close proximity of Emile Sinclair meant he made a horrible hash of it and spilt it over his line.
But the lead only lasted six minutes as a John Marquis foul in the left-back area gave the home side the hosts the opportunity to put a free-kick into the danger zone.
Matt Bloomfield delivered an inch perfect cross for Pierre to plant a header beyond Matt Duke’s left hand and restore parity.
Town rode their luck five minutes into the second half when substitute Dean Morgan headed against the bar with Duke flat-footed on his goal-line.
Stuart Lewis hit a stinging shot that Duke gathered at the second attempt after a long delay due to an injury to Zander Diamond that saw the defender leave the field on a stretcher.
Substitute Chris Hackett steered an effort wide of the target after Marquis had cushioned a long Evan Horwood ball into his path at the other end.
There was high drama in the last of 10 added minutes when Wycombe thought they had scored a winner only for the effort to be ruled out for offside.
A Max Kretschmar free-kick was tipped onto the bar by Duke but Morgan was offside when he tucked the rebound away and the game ended in a draw.
Wycombe: Ingram, Rowe, Johnson, Pierre, Wood, Cowan-Hall, Lewis, Scowen, Bloomfield, McClure, Kuffour
Subs: Morgan (for Cowan-Hall 31), Stewart (for Pierre 62), Kretzschmar (for Kuffour 90+1)
Not used: Horlock, Jeffrey, Morias, Arnold
Cobblers: Duke, Tozer, Diamond, Robertson, McSweeney, Morris, Ravenhill, Horwood, Sinclair, Connell, Marquis
Subs: Hackett (for Connell 72), Dickenson (for Sinclair 72), Doumbe (for Diamond 79)
Not used: Snedker, Langmead, Deegan, Moyo
Attendance: not given