Ford Explorer 1996–1999 — technical service bulletin
Bulletin 6980 · NHTSA communication 6090286 · issued Sep 1, 1999
Technical service bulletin
communication type
Unknown OR Other
component
1996–1999
model years
8
vehicle entries
Official summary
Some vehicles may exhibit the check engine light on with diagnostic trouble code po420. *tt
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.