Service bulletins for the 2004 Mazda Mazda3
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.
249 on file from NHTSA, as of 2026-10-19.
About B1600 on the 2004 Mazda Mazda3: what the code means, and the bulletins and recalls about the same components.
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By component
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Only bulletins with trouble code: B1600 are shown. Show all
| 01012004 | 2004-09-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE NO CRANK ALONG WITH IMMOBILIZER MALFUNCTION. DIAGNOSTIC TROUBLE CODES P1260 (IMMOBILIZER SYSTEM PROBLEM) AND B1600/B1602 (KEY ID NUMBER CANNOT BE READ) AND/OR U2516 (IC-CAN BUS OFF TRANSMIT ERROR) MAY BE STORED IN MEMORY. MAZDA M-TIPS. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.