Air carrier pilot reported receiving a GPWS 'Terrain' alert near the FAF while on a left base leg to Runway 24 at UNV. Pilot made a slight climb to silence the warning and landed normally.

Narrative

While proceeding to GEKDE; the Final Approach Fix (FAF) for the RVAV (GPS) Approach to Runway 24 at UNV; at the FAF altitude of 3;400-ft MSL to set up for a left base for a visual approach to Runway 24; the flight received a single TERRAIN; TERRAIN" warning message from the EGPWS (Enhanced Ground Proximity Warning System) even though the aircraft was in stable level flight above the terrain. In response to the EGPWS warming; the Pilot Flying disengaged the autopilot and manually initiated a slight climb after which the EGPWS warning immediately terminated. The visual approach to Runway 24 was hand-flown by the Pilot Flying without further incident.Cause: High terrain located south of the FAF for the RNAV (GPS) Approach to Runway 24 at UNV.Suggestion: When approaching the Final Approach Fix (FAF) for Runway 24 at UNV from the south; maintain an altitude above the FAF altitude of 3;400-ft MSL to preclude receiving an EGPWS warning while crossing the terrain located to the south of the FAF."