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P1740 on the 1998 Mazda B-Series

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name P1740
00399R1999-09-17. Service bulletin. EXPERIENCING A FLASHING OVERDRIVE OFF INDICATOR WITH MALFUNCTION INDICATOR LAMP ON AND DIAGNOSTIC TROUBLE CODES P0741 AND / OR P1740. *TT
003991999-08-10. Service bulletin. CONCERNS WITH A FLASHING OVERDRIVE OFF INDICATOR (O/D OFF) WITH MALFUNCTION INDICATOR LAMP (MIL) AND DIAGNOSTIC TROUBLE CODES P0741 AND / OR P1740 PRESENT. *TT

2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.