Service bulletins for the 2000 Mazda B-Series
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.
120 on file from NHTSA, as of 2026-10-19.
About P1721 on the 2000 Mazda B-Series: what the code means, and the bulletins and recalls about the same components.
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Only bulletins with trouble code: P1721 are shown. Show all
| 0100801 | 2001-09-04. Service bulletin. ELECTRICAL SYSTEM. SOME VEHICLES BUILT PRIOR TO JANUARY 2, 2001 MAY EXHIBIT ROUGH IDLE, ANTI-LOCK BRAKE SYSTEM (ABS) WARNING LAMP ILLUMINATION, INOPERATIVE OR ERRATIC SPEEDOMETER, DIAGNOSTIC TROUBLE CODE (DTC) P0500, P0501, P0503, P1721, P0176, P1000, ABS DTC 9, RABS DTC 16, OR A DELAYED OR HARSH SHIFTING AUTOMATIC TRANSMISSION. *TT |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.