Service bulletins for the 2004 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.
257 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
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Only bulletins with component: Engine are shown. Show all
| 02003 | 2004-03-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. MALFUNCTION INDICATOR LAMP (MIL) ON CONDITION WITH DIAGNOSTIC TROUBLE CODE (DTC) P0441, P0442 AND/OR P0446. *TT |
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| 00203 | 2004-03-15. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OXYGEN SENSOR (O2S) MONITOR THRESHOLD VALUES FOR ALL TOYOTA MODELS FROM 1996 TO 2003 AND VARIOUS 2004 MODELS INCLUDING COROLLA, ECHO AND SCION XA & XB MODELS. *TT |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.