ABS Sensor

What is a ABS Sensor?
The ABS sensor is also known as the Wheel Speed Sensor. The job of the sensor is to provide a digital signal to the car's ECU that reports the speed of each wheel.

This function is vital for ABS to operate as without speed readings from the wheels the ECU cannot determine whether a wheel is locking up under braking. When the ECU detects a wheel is turning at a speed slower than is possible relative to the other wheels it will engage the ABS system to manage braking on the wheel. Once the wheel then returns to a normal speed it will re apply the brake (via the abs pump). This process repeats up to 20 times per second and is responsible for the grinding sensation you sometimes feel when you apply the brakes.

If the sensors malfunction this vital safety system cannot work correctly. It's not always clear if the sensors are failing as other issues can make them appear to be the culprit. Any problems or warnings from the ABS should be investigated by a qualified mechanic.
What problems can be caused by a faulty ABS Sensor?
How much does it cost to replace the ABS Sensor?
The ABS sensor is another part that varies hugely in cost depending on the manufacturer, they can range from £500 to £3500. They will usually take a couple of hours to replace.
91 problems that mention the ABS Sensor

Showing the latest 10, see more problems here

1
response
Engine malfunction

HI, engine malfunction comes up on display and the esp light above at the same time I turn engine off, wait then start up and its clear but its done this 3 times this week help please JF

2009 Ford Mondeo 2.0 diesel
Posted: Oct 13, 2021
3
responses
ABS and AntiSlide warning lights come on sometimes not allways, electrical problem?

ABS and Antislide warninglights come upp , not always and not when the car is parked. We checked the brakingsystem which is ok, Electrical failure?

2018 Renault Scenic Grand Scenic 1,4TCE Bose
Posted: Jul 14, 2021
6
responses
Cruise control won't engage in 5th gear

Works fine in 3rd and 4th gear, go to 5th gear and it will go into "cruise standby" but the set / plus / minus buttons have no effect so the "cruise standby" times out. Works fine at 80 km/hr in 4th s...

2007 Ford Mondeo 1.6 Petrol Hatchback 07-14
Posted: May 11, 2021
9
responses
Warning Lights

suddenly, this morning, several warning lights came on (ASR, Parking Brake, Tyre Deflation and Eco) and cruise control not working. Ran diagnostic and it said repairs needed. The Parking brake works ...

2013 Citroen C4 Picasso
Posted: Mar 21, 2021
1
response
Spedometer not working

I had my passenger front brake caliper replaced, suddenly after my spedometer stopped working and ABS sensor came on?

2005 Vauxhall Astra 1.8 club
Posted: Dec 11, 2020
4
responses
Brakes kicking in at low speed

when pulling off from the car standing for some time around 10mph in first it feels as if the brakes are engaging and making a grinding noise even though I am not touching the brake pedal. only last f...

2012 Vauxhall Meriva 1.4
Posted: Aug 16, 2020
3
responses
Abs light on

i had new rear shocks replaced and immediately car was started the abs light stayed on...two different dianostics could not read the abs

2008 Chevrolet Matiz 1.0 petrol
Posted: Feb 24, 2020
1
response
Electrics and power steering

After 3 days in the garage, the problems are still present - the hand-brake light, on the dash, flashes, the ABS warning light is still on, the power steering light is still. The speed-o-meter interm...

2010 Seat Ibiza 1200cc
Posted: Feb 20, 2020
1
response
Abs and tracs light

i have intermittent issue with tracs and abs lights cming on and the car seems to go into limp mode then ityll come back and drive fine again for 20 miles sometimes all day then comes on again seems m...

2008 Chevrolet Captiva 2.0 lt diesel
Posted: Aug 8, 2019
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