TSB: Some 2016 ? 2018 model year Prius and Tacoma, 2017 ? 2018 model year Prius Prime and
Sienna, and 2018 model year Camry and Camry Hybrid vehicles may exhibit a MIL ON condition
with Diagnostic Trouble Code (DTC) P261093 (ECM/PCM Engine Off Timer Performance No
Operation) present. The Engine Control Module (ECM) (SAE term: Powertrain Control
Module/PCM) logic has been modified to reduce the possibility of this condition. Follow the Repair
Procedure in this bulletin to address this condition.