Standard/OEIn stock
$37.18
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SEN-2ABS2476• Front Left• ABS Wheel Speed Sensor
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GeoBrakes stocks a complete range of passive and active ABS wheel speed sensors confirmed to fit the Volvo S40, each sourced to OEM specifications for direct-fit installation and reliable ABS performance on your S40. Every Volvo S40 sensor is compatible with traction control and stability control systems.
Standard/OE$37.18
10 items in stock
Select your vehicle to see compatible products and accurate pricing
Your Volvo S40 ABS wheel speed sensor is the component that makes anti-lock braking possible on your S40. It monitors the rotational speed of each wheel in real time and sends that data to the Volvo S40 ABS control module, which uses it to prevent wheel lockup during emergency stops. When a sensor fails on your S40, your ABS loses the input it needs. On wet, icy, or gravel road surfaces, the difference between a controlled stop and a skid can come down to whether your Volvo S40 wheel speed data is reaching the module.
The ABS wheel speed sensor on the Volvo S40 is an electromagnetic or Hall-effect sensor mounted near each wheel hub or bearing assembly of your S40. It generates an electronic signal as a toothed reluctor ring rotates past it, producing a frequency the S40 ABS module interprets as wheel speed. On most modern Volvo S40 vehicles, this same data feeds the traction control system, electronic stability control, and electronic brake force distribution, making a functioning wheel speed sensor critical to the safe operation of multiple S40 systems simultaneously.
GeoBrakes stocks both passive and active ABS wheel speed sensors for the Volvo S40. Passive sensors use an analog signal and are found on older S40 vehicles and many trucks still in service. Active Hall-effect sensors require a small power supply and output a clean digital signal, offering greater accuracy at very low speeds. Active sensors are standard on most Volvo S40 vehicles manufactured after the mid-2000s and are required for full compatibility with modern S40 traction and stability control systems.
Signal accuracy matters as much as fitment with Volvo S40 wheel speed sensors. A sensor that generates the correct frequency for your S40 ABS module ensures consistent ABS calibration, proper traction control thresholds, and accurate stability control response on your Volvo S40. Every sensor in the GeoBrakes catalogue is matched to the Volvo S40 through our vehicle selector, with front and rear positions listed separately to eliminate position errors on your S40.
Can I drive my Volvo S40 with a faulty ABS wheel speed sensor?
You can drive the Volvo S40 with a failed ABS sensor, but the anti-lock braking system on your S40 will be completely disabled. On icy or wet American roads, this significantly increases stopping distances and the risk of losing steering control during hard braking on your Volvo S40. Replacing a failed sensor promptly is strongly recommended, particularly before winter.
How do I find the right ABS sensor for my Volvo S40?
Use the GeoBrakes vehicle selector and enter the Volvo S40 year, make, and model. The system displays only the sensors confirmed to fit the Volvo S40, with front and rear positions listed separately. Select the position matching the sensor you are replacing on your S40 to avoid receiving the wrong unit.
Do I need to replace all four ABS sensors on my Volvo S40 at the same time?
No. ABS wheel speed sensors on the Volvo S40 are independent components and only the failed unit needs to be replaced. However, if your S40 has high mileage and one sensor has failed, it is worth visually inspecting the connectors on the other Volvo S40 sensors for corrosion while the wheel is removed.