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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.

By type

By component

By trouble code

Only bulletins with component: Fuel system are shown. Show all

Bulletins, newest first
TSB-0033-232023-07-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, GASOLINE. TSB: Some 2020 ? 2023 model year Highlander Hybrid and 2021 ? 2023 model year RAV4 Hybrid, RAV4 Prime, Sienna Hybrid, and Venza Hybrid vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: ?P24517F ? Evaporative Emission System Switching Valve Actuator Stuck Off. ?P14502A ? Fuel Tank Pressure Sensor Signal Stuck in Range.
23TE01 Dealer Pa2023-05-15. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. DP: Although the high-pressure fuel pump is covered by Toyota?s New Vehicle Limited Warranty for 5 years or 60,000 miles (whichever comes first), we at Toyota care about the customers? ownership experience. Toyota is providing coverage for repairs related to the presence of a fuel odor in or around the engine bay originating at the high-pressure fuel pump of the subject vehicles.
T-SB-0049-21 Rev2023-01-17. Service bulletin. ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE. TSB: Some 2020 ? 2022 Highlander and Highlander Hybrid and 2021 ? 2022 Sienna Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0087 (Fuel Rail/System Pressure ? Too Low) and/or P107A2A (Fuel Rail Pressure Sensor (Low) Signal Stuck in Range) present. This condition may occur when the vehicle is operated at high altitude and high temperature; typically, above 3,300 feet (1,000 meters) and ambient temperature above 85°F (30°C). The Engine Control Module (ECM) (SAE term: Powertrain Control Module/PCM) logic has been modified to reduce the possibility of this condition occurring. Follow the Repair Procedure in this bulletin to address this condition

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.