C1937 on the 2001 Ford Focus
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.
| 15642 | 2002-04-19. Service bulletin. ABS/ADVANCE TRAC LIGHT ON AND DIAGNOSTIC TROUBLE CODE C1937 OR THE STABILITY ASSIST SYSTEM ACTIVE/FAIL LAMP FLASHING. *TT |
|---|---|
| 14693 | 2001-05-17. Service bulletin. ABS / ADVANCE TRAC LIGHT ON AND DIAGNOSTIC TROUBLE CODE C1937 OR THE STABILITY ASSIST SYSTEM ACTIVE / FAIL LAMP FLASHING. *TT |
2 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.