Chassis, generic

C0111 ABS Activation Excessively Long

Check engine lightUsually off
EmissionsNot relevant
Drive cycleRequired
Limp modePossible

No accessible J2012 table, manufacturer index or NHTSA bulletin lists C0111, so the code cannot be traced to any published application. The title describes a plausibility monitor rather than a wiring fault: the controller notices that an anti-lock intervention, or one of its pressure-release phases, lasts longer than makes physical sense. Bosch patented such a guard in 1988. If a wheel shows slip above a threshold for about 20 s while the driver is not braking, the controller first becomes less sensitive and then switches ABS off and lights a lamp; a spare wheel or uneven tyre pressures were the named triggers. A Toyota/Denso patent ends a pressure reduction after about 3 s and checks for abnormal prolongation. Mismatched tyres or a weak speed signal are the likely roots.

Likely causes

Spare wheel, mixed tyre sizes or very uneven tyre pressures
Weak or disturbed wheel speed signal (air gap, dirty sensor ring)
Sluggish valve in the hydraulic unit prolonging a control phase

Symptoms

  • ABS warning lamp on, anti-lock function switched off
  • Pedal pulsing or long release phases during gentle braking

Repair estimate

DifficultyMediumDIY possible
Parts and labour€0–600
Time0.3–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

abs control moduleabs hydraulic blockwheel speed sensors

Related codes

C0112C0080C0110

References: patents.google.com, patents.google.com, bosch-mobility.com.