Toyota 89665-08240 Engine Control Calibration

Toyota 89665-08240, listed in service records under the full calibration identifier 896650824000, is an updated engine control module calibration. The ECM manages engine operation by interpreting sensor signals and controlling functions such as fuel delivery and ignition. Its calibration influences how the engine runs and how the module detects faults.

Malfunction indicator light and P261093

Toyota service bulletin T-SB-0013-19 lists 896650824000 as an updated calibration in connection with a malfunction indicator light and diagnostic trouble code P261093. In practical terms, the bulletin addresses a check-engine-light condition identified by that code. The calibration’s listing does not mean that every vehicle displaying P261093 uses this software or has the same underlying cause.

The bulletin covers several Toyota models and model years, including Prius, Tacoma, Sienna and Camry variants. That list describes the bulletin’s overall scope, not exact fitment for 89665-08240.

Engine control module service context

Toyota also lists the full calibration identifier as updated in T-SB-0001-18, a service bulletin covering the engine control module on certain 2017–2018 Highlander and Sienna vehicles. The available record does not identify the specific drivability concern or software change addressed for this calibration.

The complete identifier matters when comparing service records. The 89665 family points to engine-control calibration, while 896650824000 distinguishes this entry from other calibrations in that family. A vehicle’s applicable calibration must be established from its own configuration and service information rather than from the shared prefix alone.