found this on an E29 code for the nissan systems:
E-29 Self shutdown system fault
1. ECCS C/U self shutoff does not activate properly.
unfortunatly there is no troubleshooting checklist section on this error code that i can find. Maybe someone else has experienced this error and knows where to look, during the years of dealing with these systems i have never come across this code before so not sure where to start other than the usual places, connectors, relays, fuses, etc.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.