ABS Sensor Replacement Cost UK
An ABS sensor replacement at a UK independent garage typically costs £90 to £180 per sensor fitted, including the diagnostic check to confirm which corner is at fault. It is one of the cheaper warning-light fixes, but it is also an MOT failure if left, so it is not one to ignore until test day.
What it costs
| Job | Typical price (independent) |
|---|---|
| ABS sensor, easy access, sensor comes out cleanly | £90 to £130 |
| ABS sensor, awkward access or dearer part | £130 to £180 |
| Sensor seized in the hub (extraction labour) | add £40 to £100 |
| Diagnostic scan to identify the faulty corner | often included, otherwise £30 to £60 |
Symptoms
The ABS warning light on the dash is the obvious one, often joined by the traction control light and sometimes a handbrake or brake warning too, since the systems share the same sensors. You may notice the ABS activating when it should not, a pulsing pedal at low speed on a dry road, or the speedometer misbehaving on cars that take their speed signal from a wheel sensor. The brakes themselves still work normally, but without anti-lock.
Why it fails
ABS sensors live at each wheel, inches from salt spray, water and grit, which is a hostile place for a small electrical component. The wiring corrodes, the sensor tip gets damaged, or debris and rust build up on the toothed ring the sensor reads. On many cars the fault is actually a corroded reluctor ring rather than the sensor itself, which is worth knowing before parts get ordered.
Can you drive with it?
Yes, with care. Your normal brakes are unaffected, but ABS, traction control and often stability control are disabled, which matters most in the wet and on greasy winter roads, exactly the conditions British drivers meet daily. It is also a straight MOT failure while the light is on. Treat it as a fix-this-month job, not an emergency stop, and drive accordingly in bad weather.
How to avoid overpaying
Do not let anyone replace a sensor without scanning the car first, because the fault code names the corner and often says whether the signal is missing or just implausible, which points to ring corrosion instead of the sensor. Ask the garage to inspect the reluctor ring while they are in there, since fitting a new sensor against a rusted, swollen ring means the light comes straight back. On older cars, sensors do seize into the hub, so agree upfront how extra extraction time will be charged.
Common questions
Will an ABS light fail the MOT?
Yes. An illuminated ABS warning light is a major defect and fails the test. The fix is usually cheap by warning-light standards, so it rarely makes sense to leave it.
Are the brakes safe with a faulty ABS sensor?
Normal braking is unaffected, but anti-lock, traction control and often stability control stop working. In wet or icy conditions that safety net matters, so drive gently until it is fixed.
Why has the light come back after a new ABS sensor?
Commonly because the real fault was the toothed reluctor ring the sensor reads, which corrodes and cracks, or a damaged wiring section. A proper garage checks the ring and wiring before or when fitting the sensor.