When the CHECK ENGINE light comes on and stays on (after start-up), this indicates that a code (or codes) has been stored in memory. To retrieve this information for purposes of troubleshooting, cycle the ignition switch ON - OFF - ON - OFF - ON within five seconds. The check engine lamp will then flash the DTC(s). Each code, if there is more than one, will be preceded by a four second pause, to distinguish it from the previous code. An example of a DTC would be as follows:
The two DTC's displayed, following the two second pause, were 41 and 47. Whenever the malfunction indicator is operated, as many DTC's as are in memory will be displayed. At the end of the sequence, it will flash 55, which indicates it is the end of the stored codes.