Key On Engine Running (KOER) Self-Test
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Lincoln Navigator, 2002 Ford Expedition, 2001 Lincoln Navigator, 2001 Ford RV Cutaway, and 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
These DTCs indicate faults are present at time of testing. A hard fault may cause CHECK ENGINE or MIL to illuminate and remain illuminated until fault is repaired. If KOER DTCs are retrieved during a KOER SELF-TEST, identify DTCs and perform appropriate diagnostic test. See DIAGNOSTIC TROUBLE CODE DEFINITIONS .
Ensure engine is at normal operating temperature. Turn ignition switch to OFF position. Ensure test equipment is properly attached. Program NGS tester following manufacturers instructions. Follow operating instructions from NGS tester menu. Perform BPP switch, PSP switch and TCS cycling when instructed.
CAUTION:
Continuous memory DTCs should be recorded when retrieved. These DTCs may be used to identify intermittent faults that exist after all KOEO and KOER DTCs have been repaired. Some continuous memory DTCs may not be valid after KOEO and KOER DTCs are serviced.