C0111ABS Activation Excessively Long
- Generic OBD-II code · Chassis
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- 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.
- What you may notice
- ABS warning lamp on, anti-lock function switched off
- Pedal pulsing or long release phases during gentle braking
- Likely causes
- LikelySpare wheel, mixed tyre sizes or very uneven tyre pressures
- PossibleWeak or disturbed wheel speed signal (air gap, dirty sensor ring)
- RareSluggish valve in the hydraulic unit prolonging a control phase
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.