A quick connector assembly for establishing fluid communication between a first fluid line and a second fluid line and a sensor, said assembly comprising: a coupling housing extending along a coupling axis (A 1) between an inlet end and an outlet end; a fluid quick connector disposed about one of said ends (24, 26); said coupling housing defining a coupling passageway extending along said coupling axis (A 1) between said ends (24, 26) and an auxiliary passageway in fluid communication with said coupling passageway and extending along an auxiliary axis (A 2) which intersects said coupling axis (A 1); said coupling housing including a sensor quick connector axially aligned with said auxiliary axis (A 2); a sensor housing insertable along said auxiliary axis (A 2) and including at least one locking barb to establish interlocking relationship with said sensor quick connector; wherein said sensor quick connector includes at least one leg and said locking barb extends radially outwardly for flexing said leg during axial movement of said sensor housing along said auxiliary axis (A 2) to establish said interlocked position of said coupling housing and said sensor housing; said leg includes a mechanical stop and said locking barb includes a first shoulder for engaging said mechanical stop in said interlocked position to prevent axial movement of said sensor housing; said sensor housing includes a male portion extending downwardly from said locking barb to a distal end disposed within said auxiliary passageway in said interlocked position; and said at least one locking barb includes a secondary gripping barb extending radially outwardly from said male portion between said locking barb and said distal end and said coupling housing defines a groove for receiving said secondary gripping barb in said interlocked position of said housings (22, 42) to establish secondary interlocking relationship between said housings (22, 42) and prevent rotational movement of said sensor housing about said auxiliary axis (A 2). a coupling housing extending along a coupling axis (A 1) between an inlet end and an outlet end; a fluid quick connector disposed about one of said ends (24, 26); said coupling housing defining a coupling passageway extending along said coupling axis (A 1) between said ends (24, 26) and an auxiliary passageway in fluid communication with said coupling passageway and extending along an auxiliary axis (A 2) which intersects said coupling axis (A 1); said coupling housing including a sensor quick connector axially aligned with said auxiliary axis (A 2); a sensor housing insertable along said auxiliary axis (A 2) and including at least one locking barb to establish interlocking relationship with said sensor quick connector; wherein said sensor quick connector includes at least one leg and said locking barb extends radially outwardly for flexing said leg during axial movement of said sensor housing along said auxiliary axis (A 2) to establish said interlocked position of said coupling housing and said sensor housing; said leg includes a mechanical stop and said locking barb includes a first shoulder for engaging said mechanical stop in said interlocked position to prevent axial movement of said sensor housing; said sensor housing includes a male portion extending downwardly from said locking barb to a distal end disposed within said auxiliary passageway in said interlocked position; and said at least one locking barb includes a secondary gripping barb extending radially outwardly from said male portion between said locking barb and said distal end and said coupling housing defines a groove for receiving said secondary gripping barb in said interlocked position of said housings (22, 42) to establish secondary interlocking relationship between said housings (22, 42) and prevent rotational movement of said sensor housing about said auxiliary axis (A 2).