This document provides test values and test limits for diagnostic trouble codes (DTCs) related to oxygen sensors, the EGR system, EVAP system, and catalyst on certain Nissan models. It lists the DTC, self-diagnostic test item, applicable system, test ID, component ID, test value displayed on the GST screen, test limit, and unit of measurement. Test values are parameters used to determine if a diagnostic test is "OK" or "NG" while being monitored by the ECM during self-diagnosis, and test limits provide the maximum or minimum reference values used for comparison.