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P2404 on the 2003 Mazda Mazda6

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 P2404
01033042004-11-02. Service bulletin. MALFUNCTION INDICATOR LAMP ILLUMINATION WITH DIAGNOSTIC TROUBLE CODES P2404 AND/OR P0456. *TT
1303F2003-10-22. Service bulletin. THE CHECK ENGINE LIGHT MAY ILLUMINATE UNDER CERTAIN CONDITIONS AND A DIAGNOSTIC TROUBLE CODE P2404 MAY BE STORED DUE TO IMPROPER PROGRAMMING OF THE POWERTRAIN CONTROL MODULE. AN EMISSION RECALL CAMPAIGN (# 1303F) TO REPROGRAM THE POWERTRAIN CONTROL MODULE HAS BEEN CONDUCTED. *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.