Service bulletins for the 2021 Toyota Sienna
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
176 on file from NHTSA, as of 2026-10-19.
About P0606 on the 2021 Toyota Sienna: what the code means, and the bulletins and recalls about the same components.
By type
By component
By trouble code
Only bulletins with trouble code: P0606 are shown. Show all
| TSB001823 | 2024-04-01. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU); ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE. 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. |
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| T-SB-0018-23 | 2023-05-15. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT. 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 condition. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.