Are all ABS sensors the same?
Thereof, are ABS sensors on all wheels?
A wheel speed sensor, also called an "ABS sensor," is part of the Anti-lock Brake System (ABS). On cars that come with rotors in each tire, each tire will also have a speed sensor. On cars that have rear drums (instead of rotors), the tires will have one sensor in the rear and two sensors in the front.
One may also ask, how do you know which ABS sensor is bad? So, now you know how to test your ABS sensors to find out which one is bad. Using a voltmeter, you can connect it to the ABS sensor and turn the wheel to get a reading. If you don't or it is wrong, you can clean the ABS reluctor. If the reading is still incorrect, you know which sensor to replace.
Also question is, are speed sensor and ABS sensor the same?
Yes, the ABS Sensor and the Wheel Speed Sensor are both the same part. Yes, the ABS Sensor and the Wheel Speed Sensor are both the same part.
What causes ABS sensor to fail?
A wheel speed sensor is the most common failure in the ABS system. The reason your engine management and traction control light are also on is because those systems "borrow" wheel speed information from the ABS system. The reason the fail so often is because they live in a hostile environment.