Intermittent Malfunction Indicator Lamp (MIL) Telltale Lamp

In the case of an intermittent problem, the malfunction indicator lamp (MIL) will light for 10 seconds and then will go out. However, the corresponding diagnostic trouble code or information flag will be stored in the memory of the PCM until removed.

An intermittent problem may or may not set a diagnostic trouble code or information flag. If it is an intermittent failure, a Diagnostic Trouble Code Chart is not used. Consult the Diagnostic Aids on the diagnostic chart corresponding to the intermittent diagnostic trouble code or information flag. Also, refer to "Diagnosis by Symptoms". Testing and Inspection

A physical inspection of the applicable sub-system most often will resolve the problem.