Rear Speed Sensor/Wheel Bearing

Try to clear the DTC manually and see if it comes back.

 

Dealership?

 

Hi Phoenix. I know this thread has stopped going since 2018, but here it goes. Is 2021 and I am reading it because I have exactly the same problem. I had all the brake (yellow and red), abs, vcs lights on, scanned and it came back with code c0215 (rear left speed sensor). I replaced it (non Toyota original) and the fault still there even after resetting the paper clip way and high tech scanner way. I checked the wiring aroung the wheel and it shows no sign of damage. I done a continuity and resistencia check from the connector end by the speed sensor to the next end which is just on the other side of the wheel arch behind the left passenger seat and is all within limits. I tried to do the same checks from the connector behind the passenger seat to the next connector which is the one that goes into the anti skid module. It seats by the right/behind of the gas pedal. Because my Prius is a uk model the anti skid module is located very far by the right front door and I cant even undo the connectors from the module due to lack of freedom. The amount of dismantling will be an absurd, so I decided for the moment to assume it is in within limits to as the wiring looks intact.
I was wondering how in your case as you having replaced the speed sensor and still facing the same problem ,how have you come to a fix.
It would be very interesting to know it.
Thanks

 

Just for clarity, you rescanned the car after clearing the codes? If so, did you confirm it is the same C0215?

What scanner are you using? Is it capable of interrogating the battery or hybrid vehicle (HV) ECUs?

FYI, your posts are moderated until you have 5 or more posts. This means we won't see your posts until approved by a moderator. It is an inconvenience, but a necessary spambot countermeasure.

 

I would suggest looking very closely at the terminal pins on your old sensor assembly to see if there is ANY corrosion present. If there is then the connector may not be making proper contact.

If the pins look shiny and bright then unplug the right rear sensor. Does the ecu set a code for that? Plug the old LR sensor into the RR harness. Does the code for the RR go away? (ie, is the old LR sensor actually faulty?) Try spinning that wheel hub while someone watches your scantool to see if the data shows a speed signal for that circuit.

If I am diagnosing a problem like this then I try to do things like carefully running long jumper wires to connect the harness on one side to the sensor on the opposite. I want to eliminate possibilities by proving what bits are functional. Yes the old sensor could have failed, but you don't know if the new part is good. (NEW = never ever worked).

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I have the exact same problem!! And I want to know what happened after this.
It's been four months having this problem. I replaced with cheap ones but the lights never disappeared.
So I bought a hub from NSK and a wire from Toyota and installed them.
The lights are still there and keep coming back after resetting with the pins.
Some people mentioned that it is recommended to drive in test mode or something?

 

Hello and welcome to PriusChat.

What year Prius do you have? Mileage? What warning lights are on? What codes does it have? How do the brakes feel - any weird noises? What testing have you done?

We can't read minds, so the more info you can give about your situation, the better.

FYI, your first 5 posts are moderated.

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Thank you for your reply!
Prius 2011, 150,000 miles, C0210, The ABS, Slip and both brake warning lights are on.
The regenerative brake is not functioning.
I probably should share this in Gen3 forum?

A mechanic found out that the electricity is not coming from the wire inside of the body that is connected with the ABS wire harness.
So the problem should be inside of the body, wires or ECU.

I will try to see wiring inside to see if there is any corrosion.

 

Yes, posting in the Gen 3 forum would serve you better.

 

I got it. Thank you!