ABS Light On — What Does It Mean?
ABS is the anti-lock braking system (it stops wheels from locking under hard braking). Its light means that specific system has failed — not necessarily that normal braking is lost.
Are the brakes safe?
Usually yes — normal brakes work, but you lose the ABS feature (wheels may lock under hard braking/slippery roads). If the red brake light is also on, it is more serious — stop and inspect.
Common causes
A dirty/failed wheel speed sensor (most common), wiring/connector, a fuse, or the ABS module. An ABS-specific code is usually stored.
Diagnosis
It needs a scanner that reads ABS codes (not just engine codes). Start by checking the wheel speed sensors and wiring. Drive gently until inspected.
FAQ
ABS light + red brake light together?
More serious — it may mean a brake-distribution or fluid-level issue; pull over safely and inspect immediately.
Does a basic OBD2 read ABS faults?
Not always — many read engine only; ABS codes need a scanner that supports them.