Toyota Sienna 2021–2023 — technical service bulletin
Bulletin TSB001823 · NHTSA communication 10252252 · issued Feb 15, 2024
Technical service bulletin
communication type
Electrical System
component
2021–2023
model years
6
vehicle entries
Official summary
TSB: Some 2021 ? 2023 model year Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060694 (Hybrid/EV Powertrain Control Module Processor Unexpected Operation) present. The Hybrid Vehicle Control Computer logic has been modified to reduce the possibility of this DTC setting incorrectly. Follow the Repair Procedure in this bulletin to address this condition.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.