Wheel speed sensor harness

Hey everyone,

I have a 2015 Scion tc, and recently my ABS, traction control and power steering light came on. I ran the codes and it was saying my wheels speed sensor front driver side was not Reading. I checked and the sensor was fine but noticed the wire it connects to snapped.
I can’t seem to find the right wire. Any ideas or suggestions

What do you mean? The right type of wire to make the repair? The wire that is the other end of that? A wiring diagram? What?

Rock Auto has a repair harness for the front speed sensor connectors.

More Information for STANDARD MOTOR PRODUCTS S2825 (rockauto.com)

2015 SCION TC 2.5L L4 ABS Wheel Speed Sensor Connector | RockAuto

1 Like

Sorry, the wire harness that connects to the speed sensor. So yes what is the correct wire for the repair I can’t seem to find that. The speed sensor itself look’s perfect intact

Check the repair pigtail in @Nevada_545 s post.

I’ll give that a shot, thanks!

If all you need is a length of replacement wire so you can patch it in & reconnect the harness to the sensor, you could take a short piece of the existing wire to a hardware store and match it up to their stock of wires. I’d guess that’s a multi-strand wire, the type often used for home telephone wiring (land line phones). Suggest to solder all connections, repairs covered w/heat shrink tubing & some kind of add’l over-harness protection. Whenever I do electrical work in my cars, I always disconnect the battery first.

Or just order a new harness for $10 and plug it in, or a whole new sensor for $35.

1 Like

Land line phones typically use solid core wires. At least all the ones I have worked on.

Cars use multi strand wires. ABS sensor pigtails use an extra fine stranded high flex wire.


The new pigtail idea is looking better all the time, esp for a front wheel that’s going to have to flex a bit when turning … lol …

You can go to Lowe’s and buy solid low voltage wire by the foot. Two pair, three pair. Used for hvac etc.

Never use solid wire for your car . Solid wire is only suitable for houses and industrial use, it should never be used in your car unless you are using to for bailing wire. Automotive wiring has to be flexible. Stranded wire is flexible, where solid core wire can bend, but not over and over.

1 Like

I can’t believe we’re actually having this discussion :roll_eyes:


Yeah good point.

I’ve had occasion from time to time to use specialty wire made by Gore (Gor-Tex). Very flexible and break resistant. I wonder if car manufacturers have also used that product? Seems like it would be a good choice for the steering wheel wiring and for the wheel speed sensors.

Wondering why the front wheel speed sensors for front wheel drive cars are placed at the wheels? Puts a big design constraint on the wiring, bc it not only has to flex for the side to side steering angles, but for the up/down suspension movement too. Seems like the front wheel speed sensors could be inside the transmission, then wouldn’t have to worry about all the wiring flex problems, at least for the front wheels.

Also wondering about the alloy used for the sensor harness wires? Do they use pure copper? Pure copper seems a poor choice, too breakable, doesn’t respond well to flexing. It seems like some sort of metal alloy that had some spring to it would be better, less chance of breaking…

If brakes hoses can take the suspension flex, the wiring can as well. It was developed 40+ years ago and perfected.

I don’t know the copper alloy used in wires. I know the high flex wires have finer strands than standard. Lots of sources for this.

Would you want to spend $1000+ just to open up a transmission to replace a simple abs sensor… I mean my sons speedo stopped working and he bought the part and called me to tell him where it was cause he could not find it, he sent me pics from ever angle on that stupid transmission and neither one of us could find it, so I looked up the labor and it was 8.5 hours, most are 0.5 hours, stupid 4t40e transaxle. So I told him to pull the trans and I would replace the speed sensor… BTW it was all cause the rad leaked into the cooler and made a pretty pink milkshake, he had already flushed it a few times and replaced a few VB solenoids, SO NOO!!! Keep the simple stuff out of the damn transmission!!! :face_with_symbols_over_mouth: :face_with_symbols_over_mouth: :man_facepalming: :rofl:


I’ve never had a speed sensor failure. Not saying it doesn’t happen but if it did I’d just buy a new one.

Are you going to buy one that can install itself? Just buying a new sensor doesn’t solve the problem.

I’m not going to buy one because I’ve never had a bad one. But if I did, I’d put it in myself, and send myself a bill.

1 Like