Ford Expedition 1997 — technical service bulletin
Bulletin BC3062970228 · NHTSA communication 51674 · issued Feb 28, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997
model years
1
vehicle entries
Official summary
Illumination of check engine light with dtc p0446 may be due to contaminated cannister, evap lines or vent solenoid. *tw
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.