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P0340 on the 2002 Mazda MPV

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.

Nobody has written a description of this code yet.

Bulletins for this model year that name P0340
01025022003-02-25. Service bulletin. MALFUNCTION INDICATOR LIGHT ILLUMINATED AND DIAGNOSTIC TROUBLE CODES P0340, P0503, P0443, P0660 OR P1487 STORED. *TT

1 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.