HO2S Testing
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
When one of the HO2S tests is chosen and "Trigger" is pressed, NGS will display a screen that provides HO2S test results. See Fig 1. Test results are from the most recent OBD-II drive cycle monitoring of HO2S. Test results will be updated each time a monitoring session occurs. The monitor within PCM compares certain PIDs to stored parameters and provides "Pass" or "Fail" information.