Intermittent Failures
Intermittent failures cause MIL to flicker or glow and go out about 10 seconds after intermittent fault goes away. Corresponding trouble code, however, will be retained in PCM memory. If related fault does not reoccur within 50 engine starts, related trouble code will be erased from PCM memory. Intermittent failures may be caused by sensor, connector or wiring related problems.
NOTE:
OBD II vehicles have options available in the scan tool DTC mode to display enhanced information available. However, to fully utilize information and procedures requires the use of a scan tool. See tester operator's manual for additional information.
The following are scan tool sub-menus that may be available in DTC INFO and SPECIFIC DTC modes: