LINCOLN

SSM 54400

2025-11-25 · NHTSA 11025822

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

Some 2025-2026 Nautilus vehicles with heated-only front seats (minor feature code BY1AC) (not heated and cooled) may set diagnostic trouble codes (DTCs) B103A:15, B1034:13, B1036:13, and B1038:15 in the heating, ventilation, and air conditioning (HVAC) module when a diagnostic self-test is performed. These DTCs have no effect on functionality and should be ignored if no other DTCs are present in the HVAC module and no symptoms are present. Continue with diagnosing any other HVAC DTCs first. No further service action is required.<br /><br /> To confirm a vehicle is built with a certain minor feature code, review the build information by double-clicking the vehicle identification number (VIN) in the upper left corner in the Professional Technician System (PTS).

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.