Anti-lock Brake System (ABS) Sensors

Technology such as anti-lock brakes (ABS) and electronic stability are now common place thanks to the ABS sensor or wheel speed sensor. A small device, it has a big role to play; monitoring the wheel’s speed and rotation to prevent the brakes from locking. So, it’s important to always fit an OE quality part - anything less could compromise the effectiveness of these safety critical systems. Featuring weather pack connectors and plated pins, and rigorously tested to OE standards, Delphi ABS sensors deliver optimum signal stability and reliability in all conditions, for an accurate, long-lasting sensor that you can fit with confidence.
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Latest OE technology

Our ever-expanding range of ABS sensors features the latest digital signal technology. By creating a digital, square wave, Delphi magneto resistive and hall effect sensors only change frequency, not amplitude, improving accuracy, especially at lower speeds. They can also detect the direction of the wheels; forward, reverse and even stop. This is vital for hill hold control, autohold and automatic parking assistance technologies.

Protection from the elements

Given its position, the ABS sensor is particularly vulnerable to contamination from dirt and moisture. That’s why Delphi ABS sensors feature weather-pack connectors that lock out dirt, moisture, chemicals and other contaminants, coupled with plated pins for even great corrosion protection and improved conductivity.

Extreme testing

Water, heat and vibration can all affect a sensors characteristic. So we subject all our sensors to extensive thermal, shock and vibration testing just to be sure. With test temperatures ranging from -40 o C to 140 o C, we know they’ll perform even in the most challenging conditions. Delivering optimum stability and reliability at all times.

Easy installation

For right-fist-time fitment, Delphi ABS sensors are designed to match the OE. With like-for-like mounting and connector designs and wire lengths, technicians can fit quickly and easily, straight from the box.

The complete solution

As well as a growing range of ABS sensors, we also offer advanced diagnostic capability including the ability to read live fault codes and individual wheel speed data, essential repair data through our vehicle technical information package, and expert training and technical support.

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The Delphi Difference

  • 100 years of OE experience, supplier to the world’s top automakers
  • OE heritage and knowledge built into every aftermarket part
  • Comprehensive portfolio for a wide range of vehicles and model years
  • Streamlined SKUs for easy inventory management
  • Support through tools, tips and training
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Related product resources and downloads

NOx sensor replacement | Masters of Motion
1 min read

How to replace a NOx sensor

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Sensors Vehicle Electronics & Engine Management Need to Know Technicians 1 min read

Resource Highlights

The NOx sensor is a crucial part of the emission reduction system. This guide explains how to replace a NOx sensor if it becomes faulty or damaged.

The NOx sensor explained

An Oxides of Nitrogen sensor, or NOx sensor, is placed within diesel engines to monitor the output of oxides of nitrogen. It helps to keep these harmful emissions within regulated limits by triggering the selective catalytic reduction (SCR) system to reduce the amount of nitrogen oxides being emitted from the exhaust.

As an electronic component, a failing sensor can trigger the onboard computer to trigger Limp Home mode or prevent the engine from starting. Manufacturers often prevent their models’ engines from starting if it cannot fulfil emission requirements. 

What to do if a NOx sensor fails?

If a vehicle is affected by the failure of a NOx sensor, there are likely to be some indicative symptoms such as:

  • Check engine light on
  • Engine non-start
  • Increased tail pipe emissions.

These symptoms can occur because the sensor is now giving an inaccurate reading (or none at all) about the nitrogen oxide makeup in the exhaust. This can lead to the SCR system overcompensating the amount of adblue, potentially causing ammonia slip to occur.

Read our guide to what causes NOx sensors to fail.

If these problems occur as the result of a faulty NOx sensor, it’s very important to repair or replace it as soon as possible.

Is it easy to replace a NOx sensor?

A NOx sensor replacement is a complex task. The sensor itself is a delicate component and replacing one is a job that should only be attempted by a professional.

How to replace a NOx sensor: step by step

Pick up some tips on replacing a faulty NOx sensor with this step-by-step guide.

How long does it take to replace a NOx sensor?

A NOx sensor replacement is an important enough task that can’t be hurried - the job must be done correctly and with the resolution of any lingering error codes on the OBD system.

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