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B1201 on the 2003 Lincoln Aviator

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name B1201
052132006-03-13. Service bulletin. MALFUNCTION INDICATOR LAMP ON WITH PCM DIAGNOSTIC TROUBLE CODE P0463 AND/OR IC DIAGNOSTIC TROUBLE CODE B1201 - FUEL GAUGE DROPS TO EMPTY OR SLOW TO UPDATE AFTER REFUELING. *TT

1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.