Code Enable Criteria

WARNING: This page is about a different car, the 2002 Isuzu Trooper. However, it is still accessible from the selected car via links, so may be relevant.

Following conditions must be met for DTC diagnostic test to run:

No related DTCs set.
Engine coolant temperature is 140°F (60°C) or more.
Engine is in closed loop power enrichment mode for 3 seconds.
While in power enrichment mode oxygen sensor voltage remains below 400 millivolts for 3 seconds.