Code Enable Criteria

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport and 2002 Isuzu Rodeo. 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 has been running for 2 minutes or more.
Engine coolant temperature is 140F° (60C°) or more.
HO2S heater has been determined to be functioning properly (HO2S has warmed to operating temperature).
All above conditions are met and following conditions is met for 612 test failures in 720 test samples (125 msec/test).
HO2S signal voltage remains between 400-500 mV.