Nissan Repair: 1998 altima does not pass vehicle inspection, oxygen sensors, emission inspection

Question
emission inspection reports 5 not ready reports, catalyst, heated 02, egr, evap system, and 02 sensor. Over 2 months drove vehicle hundreds of miles (did not have drive cycle).  Replaced computer, checked harnesses for corrosion, pushed pins etc.  Computer p/n JA18K10E7P, 5ZE18U.  No change to test reports, same functions not ready

Answer
Tom,

I would replace the cheapest part first to verify that it is indeed the computer/harness and not the sensors mentioned.  I bet the sensors are defective.  I have run across too many Altimas that have had the catalyst problem and the EGR and the Evaporative system problem and the oxygen sensors.  A ten year old car could indeed run with all these errors but fail vehicle inspection.  Email me back and let me know if you replaced the parts or just the computer.