C0112 code meaning
ABS Activation Frequency Too High
What C0112 means
C0112 is not found in any accessible J2012 table or in the NHTSA bulletin index, and no manufacturer documents it publicly. Read literally, the title flags anti-lock control that starts again and again although the wheel situation does not justify it, as opposed to one overlong event (C0111). Nissan and Unisia patented a counter that sums pressure-release time across successive control cycles; when it keeps growing past roughly 0.5 s because one wheel speed sensor reads too high, that sensor is judged faulty and left out of the reference speed. The Bosch patent of 1988 switches ABS off when slip persists without braking. Plausible causes are a tire of the wrong size, a cracked or loose sensor ring and electrical noise on a speed signal.
C0112 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2.5 hours
- Clears after repairAfter a drive cycle
Symptoms of C0112
- ABS kicks in at low speed or on dry road without reason
- ABS warning lamp on after repeated interventions
Common causes of C0112
- Most likelyTire or wheel of the wrong rolling circumference
- PossibleCracked, loose or contaminated sensor ring
- PossibleInterference or intermittent contact on a wheel speed sensor circuit
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
ABS control moduleWheel speed sensors
What each part of C0112 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 12 | The exact fault in that area. |
What to do next
- Note C0112 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0112
What does C0112 mean?
C0112 means "ABS Activation Frequency Too High". C0112 is not found in any accessible J2012 table or in the NHTSA bulletin index, and no manufacturer documents it publicly. It is a generic code, so it means the same on every make.
Is it safe to drive with C0112?
Drive gently and only to a workshop. With C0112 the car can go into limp mode (reduced power) to protect itself.
Will C0112 fail an emissions test?
C0112 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0112 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C0112 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.