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Service bulletins for the 1995 Mazda Protege

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.

56 on file from NHTSA, as of 2026-10-19.

About P0400 on the 1995 Mazda Protege: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: P0400 are shown. Show all

Bulletins, newest first
970830018971998-03-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. UNDER CERTAIN LOAD AND RPM RANGES EXCESSIVE NOISE MAY BE IN GENERATED IN THE EGR BOOST SENSOR CIRCUIT CAUSING DTC P0400 TO BE SET. *YC

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.