# No Speedometer

**URL:** <https://community.cartalk.com/t/no-speedometer/53373>\
**Category:** Maintenance/Repairs\
**Tags:** b2500, speedometer, mazda\
**Created:** [August 11, 2010, 11:00pm UTC](https://community.cartalk.com/t/no-speedometer/53373 "2010-08-11T23:00:04Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Ky\_Bryan](https://avatars.discourse-cdn.com/v4/letter/k/edb3f5/32.png) [@Ky\_Bryan](https://community.cartalk.com/u/Ky_Bryan)\
**Post date:** [August 11, 2010, 11:00pm UTC](https://community.cartalk.com/t/no-speedometer/53373/1 "2010-08-11T23:00:04Z")

</div>

My Mazda 2500 pickup’s speedometer has stopped working. Also the ABS light stays lit. Are these two things related? And how do I fix it ?

---

<div class="post-metadata">

**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\
**Post date:** [August 11, 2010, 11:09pm UTC](https://community.cartalk.com/t/no-speedometer/53373/2 "2010-08-11T23:09:46Z")

</div>

It is likely that the vehicle speed sensor has failed or the wiring has been damaged.

---

<div class="post-metadata">

**Author:** ![Ky\_Bryan](https://avatars.discourse-cdn.com/v4/letter/k/edb3f5/32.png) [@Ky\_Bryan](https://community.cartalk.com/u/Ky_Bryan)\
**Post date:** [August 13, 2010, 1:45am UTC](https://community.cartalk.com/t/no-speedometer/53373/3 "2010-08-13T01:45:28Z")

</div>

I didn’t mention that the truck is a 2000, and has 221,000 plus miles on it. Where do I find the sensor to check if it is bad/replace ?

---

<div class="post-metadata">

**Author:** ![geeaea](https://avatars.discourse-cdn.com/v4/letter/g/6f9a4e/32.png) [@geeaea](https://community.cartalk.com/u/geeaea)\
**Post date:** [August 13, 2010, 3:38am UTC](https://community.cartalk.com/t/no-speedometer/53373/4 "2010-08-13T03:38:55Z")

</div>

It should be somewhere on the back end of the transmission. It has to read that final drive output.

---

<div class="post-metadata">

**Author:** ![87\_Ranger](https://avatars.discourse-cdn.com/v4/letter/8/f14d63/32.png) [@87\_Ranger](https://community.cartalk.com/u/87_Ranger)\
**Post date:** [August 13, 2010, 5:21am UTC](https://community.cartalk.com/t/no-speedometer/53373/5 "2010-08-13T05:21:36Z")

</div>

If it’s not on th drivers side of the trans, look on top of the rear differential.

If I remember correctly 97 & newer were on the diff.

---

<div class="post-metadata">

**Author:** ![geeaea](https://avatars.discourse-cdn.com/v4/letter/g/6f9a4e/32.png) [@geeaea](https://community.cartalk.com/u/geeaea)\
**Post date:** [August 13, 2010, 5:43am UTC](https://community.cartalk.com/t/no-speedometer/53373/6 "2010-08-13T05:43:06Z")

</div>

Yeah, that would work too. Either the output shaft of the trans or the input (pinion) of the rear would work.