Ford Expedition 2018–2021 — technical service bulletin
Bulletin 24E13 · NHTSA communication 11018800 · issued May 5, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2018–2021
model years
4
vehicle entries
Official summary
On your vehicle, the OBD monitoring system for the catalytic converter may not be operating as intended. The Malfunction Indicator Light (MIL) may illuminate on the instrument panel even though a catalytic converter repair may not be necessary.
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.