Ford Expedition 1997 — technical service bulletin
Bulletin BC3270970207 · NHTSA communication 51868 · issued Feb 7, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997
model years
1
vehicle entries
Official summary
Check engine light - dtc p0446 - check for mold flashing in the 90 degree elbow evap line conming out of the cannister. *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.