Subaru Wrx Sti ABS Wheel Speed Sensor in US

Your Subaru Wrx Sti ABS wheel speed sensor is the component that makes anti-lock braking possible on your Wrx Sti. It monitors the rotational speed of each wheel in real time and sends that data to the Subaru Wrx Sti ABS control module, which uses it to prevent wheel lockup during emergency stops. When a sensor fails on your Wrx Sti, 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 Subaru Wrx Sti wheel speed data is reaching the module.

What Is the ABS Wheel Speed Sensor on Your Subaru Wrx Sti

The ABS wheel speed sensor on the Subaru Wrx Sti is an electromagnetic or Hall-effect sensor mounted near each wheel hub or bearing assembly of your Wrx Sti. It generates an electronic signal as a toothed reluctor ring rotates past it, producing a frequency the Wrx Sti ABS module interprets as wheel speed. On most modern Subaru Wrx Sti 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 Wrx Sti systems simultaneously.

Signs of a Failing ABS Wheel Speed Sensor on the Subaru Wrx Sti

• ABS warning light on your Subaru Wrx Sti dashboard, the most common first indicator of a failing sensor
• Traction control or stability control warning light illuminated alongside the Wrx Sti ABS light
• ABS activating on your Subaru Wrx Sti during normal stops at low speed where it should not engage
• Complete ABS deactivation on the Wrx Sti, wheels lock under hard braking on wet or icy roads
• Speedometer on your Subaru Wrx Sti reading erratically or dropping to zero at speed
• Fault codes in the C0035 to C0050 range stored in the Subaru Wrx Sti ABS control module

Passive vs. Active ABS Sensors for the Subaru Wrx Sti

GeoBrakes stocks both passive and active ABS wheel speed sensors for the Subaru Wrx Sti. Passive sensors use an analog signal and are found on older Wrx Sti 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 Subaru Wrx Sti vehicles manufactured after the mid-2000s and are required for full compatibility with modern Wrx Sti traction and stability control systems.

Why GeoBrakes for the Subaru Wrx Sti ABS Wheel Speed Sensor

Signal accuracy matters as much as fitment with Subaru Wrx Sti wheel speed sensors. A sensor that generates the correct frequency for your Wrx Sti ABS module ensures consistent ABS calibration, proper traction control thresholds, and accurate stability control response on your Subaru Wrx Sti. Every sensor in the GeoBrakes catalogue is matched to the Subaru Wrx Sti through our vehicle selector, with front and rear positions listed separately to eliminate position errors on your Wrx Sti.

Frequently Asked Questions - Subaru Wrx Sti ABS Wheel Speed Sensor

Can I drive my Subaru Wrx Sti with a faulty ABS wheel speed sensor?

You can drive the Subaru Wrx Sti with a failed ABS sensor, but the anti-lock braking system on your Wrx Sti 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 Subaru Wrx Sti. Replacing a failed sensor promptly is strongly recommended, particularly before winter.

How do I find the right ABS sensor for my Subaru Wrx Sti?

Use the GeoBrakes vehicle selector and enter the Subaru Wrx Sti year, make, and model. The system displays only the sensors confirmed to fit the Subaru Wrx Sti, with front and rear positions listed separately. Select the position matching the sensor you are replacing on your Wrx Sti to avoid receiving the wrong unit.

Do I need to replace all four ABS sensors on my Subaru Wrx Sti at the same time?

No. ABS wheel speed sensors on the Subaru Wrx Sti are independent components and only the failed unit needs to be replaced. However, if your Wrx Sti has high mileage and one sensor has failed, it is worth visually inspecting the connectors on the other Subaru Wrx Sti sensors for corrosion while the wheel is removed.