Toyota and Lexus SW#89663-60C26- MOD_E2_sap_off.bin Firmware
A catalog overview of Toyota and Lexus firmware 89663-60C26 and its MOD_E2_sap_off variant label.
SW#89663-60C26- MOD_E2_sap_off.bin is a modified Toyota or Lexus engine-control firmware file whose name indicates a secondary air injection system off variant. The base calibration identifier is 89663-60C26.
What the SAP-off label means
Secondary air injection introduces fresh air into the exhaust after a cold start to help the catalytic converter reach operating temperature and reduce emissions. The sap_off label indicates that the modified file is intended to disable some secondary air injection behavior. The filename alone does not establish whether it changes pump operation, fault monitoring, or both.
The MOD_E2 portion identifies this as a modified variant. Its exact meaning and the changes it contains are not established by the catalog name. The related entry 89663-60C26 identifies the base calibration, but does not by itself describe the contents of a stock file.
Engine-control context
The Toyota 89663 calibration family is associated with engine control module software. That software governs engine operation and emissions-related functions, while the SAP-off wording describes the intended focus of this particular modified file. The exact vehicle application and controller hardware are not established by the identifiers alone.