If you run into a series of memory faults in a Caterpillar engine that will not clear out,  they are most likely event codes.  Some of these codes can only be cleared with CAT ET software and an access code from the Caterpillar servers (they will have to call Caterpillar for this).  To confirm this search the trouble codes in Mitchell Prodemand for more information.  We may not be able to clear the event code but we can give the customer information to help them fix the underlying issue.  Some examples of these codes are below.

3719 - Estimated Soot Load is very high.

520192 - CGI Mass Flow Rate: Low - Moderately Severe - Clean gas flow consistently low.