C1991

C1991

DTC C1991, sometimes indicated as C199100 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle chassis.


    DTC Trouble Code Search
    Bulletins

    Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

    • 16336 - SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
      LINCOLN: Diagnostics for diagnostic trouble code C1991 in the abs (antilock brake system) module - omitted from workshop manual - procedure provided. *tt
    • 04125 - SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
      MERCURY: Diagnostic trouble code (dtc) C1991 (module calibration failure) - anti-lock brake, advanced trac, interactive vehicle dynamics (ivd), traction control system - service tip. Also includes ford freestar my2005 and mercury monterey my2005.
    • 03132 - SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM
      LINCOLN: This article addresses the proper procedure to clear diagnostic trouble codes C1990 or C1991 from the vehicle dynamics module/4-wheel air suspension module. *tt
    • 16075 - ELECTRICAL SYSTEM
      LINCOLN: Diagnostic procedures for diagnostic trouble code C1991 (module calibration failure) omitted from the worshop manual. *tt
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