P CODES (POWERTRAIN) P1600 - P1699 Questions

My 1998 Mitsubishi Montero Sport Jeep, V6 Engine, Start But When I Put My Foot On The Gas The Jeep Would Not Move. When I Turn The Car On...

No Spark. Changed To Igniter, Relay And Distributor As An Assembly. It Has Plenty Of Fuel At Rail And Still No Spark. Help!

I Am Trying To Fix My Neighbor's '01 Lexus Is300 (3.0l I6 Approx. 120,000 Mi.) The Problem Started Off As Totally Random, Maybe Once A...

What Does The Code P1600 Stand For? And Where Is My Onboard Computer Located At? Thanks