Ford E-150 2004 — technical service bulletin
Bulletin 17631 · NHTSA communication 10007406 · issued Mar 1, 2004
Technical service bulletin
communication type
Electrical System
component
2004
model years
3
vehicle entries
Official summary
Air bag light on with diagnostic trouble codes b1866 or b1935. *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.