N.J. Admin. Code § 13:20-7.5
If a motor vehicle inspection as required at N.J.S.A. 39:8-1 discloses the necessity of adjustments, corrections, or repairs, it shall be incumbent upon the owner or lessee of such motor vehicle to have such adjustments, corrections, or repairs made and to present the motor vehicle for reinspection no later than the last day of the calendar month following the calendar month in which the motor vehicle was due for inspection, except as otherwise provided at N.J.A.C. 13:20-7.6(a). However, if an onroad inspection required at N.J.S.A. 39:8-2 discloses the necessity of adjustments, corrections, or repairs, it shall be incumbent upon the owner or lessee of such motor vehicle to have such adjustments, corrections, or repairs made and to present the motor vehicle for reinspection at an official inspection facility or a licensed private inspection facility within 30 days of the date of the on-road inspection rejection, except as otherwise provided at N.J.A.C. 13:20-7.6(a).
N.J. Admin. Code § 13:20-7.5