Mazda 626 1996–1997 — technical service bulletin
Bulletin 00598 · NHTSA communication 603116 · issued May 28, 1998
Technical service bulletin
communication type
Unknown OR Other
component
1996–1997
model years
4
vehicle entries
Official summary
Some vehicles may exhibit a malfunction indicator light (mil) illuminated with diagnostic trouble code (dtc) p0421 stored. *yc
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.