Toyota 89665-0C410 Firmware Catalog Reference
A concise catalog reference for Toyota firmware identifier 89665-0C410 and its likely engine control module association.
89665-0C410 is a Toyota firmware identifier in a part-number family commonly associated with engine control module calibrations. The association is tentative: the complete identifier alone does not establish its exact vehicle application or the function of this particular software revision.
An engine control module manages engine operation using sensor inputs to determine commands such as fuel injection and ignition timing. Its calibration supplies the settings and logic used by the controller, but the identifier does not by itself show which settings 89665-0C410 contains or what changed from another revision.
Vehicle fitment, controller hardware, and any stock or modified variant would need to be established from the corresponding catalog record or service documentation.