Infiniti QX4 ECUs are frequently damaged by failing idle air controller on the 2000 to 2003 QX4 models.
Part numbers include:
MEC14 351
MEC14 355
MEC14 345
MEC14 346
MEC14 340
MEC14 341
MEC14 170
MEC14 171
Please include a note containing your contact information and symptoms in order to expedite the process.