Intermittent Failures
Intermittent failures may cause CHECK ENGINE light to flicker or stay on until the intermittent fault goes away. However, the corresponding trouble code will be retained in engine controller memory. If related fault does not reoccur within a certain time frame, related trouble code will be erased from engine controller memory. Intermittent failures can be caused by faulty sensor, bad connector or wiring related problems. See INTERMITTENTS in TESTS W/O CODES article in this section.