08 Buick Enclave No Reading From Right Rear Wheel Speed Sensor

Jayd1563

Just has the dummy lights pop on the nuance. Code reader reads "right rear speed sensor bespeak erratic". Replaced the right rear speed sensor and all the same an effect. Makes a clicking noise and pops the dummy lights back on. Any ideas?

MelsRegal

Did you try to jack the rear of the auto up and spin the wheel past paw to see if you can duplicate the noise?
Did you cheque if the wire harness going to the sensor has a break in the harness?

Frisbee

Your clarification is vague in diverse ways. Please clarify:

"Merely has the dummy lights pop on the dash." -- Exactly what lights?
"Lawmaking reader reads 'right rear speed sensor signal erratic'" -- Exactly what Diagnostic Trouble Code (DTC) did you see ('{P,C,B,U}####')? Is information technology from the ABS or the PCM? Probably ABS, just it'due south good to exist sure.
"still an result" -- What exactly does that mean? Did the same exact DTC come back? Or did it never get abroad because afterward the repair you didn't clear DTCs on the affected module (due east.chiliad. ABS)? Are the same exact dashboard lights coming on now?
"Makes a clicking noise [...]" -- What makes a clicking noise? Or where does it seem to be coming from? Engine compartment? Passenger compartment? Right rear wheel? Tin can't tell?

And "+1" to all that MelsRegal said.

As for the trouble remaining afterwards the repair, my guess (assuming that the DTC is unchanged before/after the repair) is that either:

The new function is faulty. Unlikely, I hope.
There'south a disconnect or other flaw in the wiring betwixt the Correct Rear Wheel Speed Sensor and the ABS (assuming the ABS is reporting the DTC).
At that place'due south a flaw in the toothed gear used by the wheel speed sensor. Highly unlikely, but mentioned for completeness.

Hope that'southward a flake helpful. I'll keep my fingers crossed for you.

Jayd1563

Your description is vague in various means. Please analyze:

"Just has the dummy lights popular on the dash." -- Exactly what lights?

"Code reader reads 'right rear speed sensor bespeak erratic'" -- Exactly what Diagnostic Trouble Code (DTC) did you see ('{P,C,B,U}####')? Is information technology from the ABS or the PCM? Probably ABS, but it'southward expert to be sure.

"yet an issue" -- What exactly does that mean? Did the same exact DTC come back? Or did it never become abroad because after the repair you didn't clear DTCs on the affected module (e.one thousand. ABS)? Are the same verbal dashboard lights coming on now?

"Makes a clicking noise [...]" -- What makes a clicking noise? Or where does information technology seem to exist coming from? Engine compartment? Passenger compartment? Right rear wheel? Can't tell?

And "+1" to all that MelsRegal said.
Every bit for the problem remaining after the repair, my gauge (bold that the DTC is unchanged before/later on the repair) is that either:

The new office is faulty. Unlikely, I hope.

In that location's a disconnect or other flaw in the wiring between the Right Rear Cycle Speed Sensor and the ABS (assuming the ABS is reporting the DTC).

There's a flaw in the toothed gear used by the wheel speed sensor. Highly unlikely, but mentioned for completeness.

Hope that's a bit helpful. I'll keep my fingers crossed for you.

The lights that came on are the ABS and the traction command calorie-free. As for the sound, information technology virtually sounds similar something clicking in the dash/forepart of the car equally crazy as that sounds. As presently equally the dummy lights popular on the noise stops. Exact code numbers i will have to become later when im home from piece of work.

Jayd1563

when installed the new sensor and cleared the codes. Backed oit of the driveway and inside a half a block the noise started and kicked the codes back.

Jayd1563

Did you lot endeavour to jack the rear of the auto up and spin the wheel by hand to run across if you can indistinguishable the noise?
Did you bank check if the wire harness going to the sensor has a interruption in the harness?

Merely hand spinning the wheels dosent replicate the racket. Visual inspection of the harness looks fine.

Frisbee · Dec 16, 2019

Assuming y'all oasis't heard that noise earlier (e.g. when the ABS kicks in normally, either for braking or traction control), the clicking audio and location is curious, but might be the ABS reacting to a bad cycle speed sensor (WSS) signal. Ignoring that for the moment, you said:

Backed [out] of the driveway and inside a half a block the noise started and kicked the codes back.

Did the dissonance happen just when/after you braked? Or did it happen simply while traveling downwardly the route?

As long equally the ABS (presumably) is consistently reporting a DTC, and since you said the harness looks good, information technology might exist fourth dimension to test your new WSS, in case you got a faulty one. EDIT: Based on the photo beneath, this turned out to exist bad advice:

~~If y'all have a voltmeter that can measure AC, read this commodity explaining one way to do it.~~

nizerims

There'southward a flaw in the toothed gear used by the wheel speed sensor. Highly unlikely, but mentioned for completeness.

I had this happen to one of my front hub & bearings. I was getting P0035 & P0040 codes with ABS and Traction lights illuminated(I call up).

You lot should be able to easily expect for missing or broken segments in the magnetic ring on your rear hub and bearings from under the vehicle unless you lot have the optional grit shields installed.

The broken magnetic ring is hidden on a visual inspection by the flexible prophylactic CV shaft boot IF the problem is on one of the forepart wheels or yous drive an AWD Majestic.

Tis the flavor for rear hubs to show their weaknesses.

Jayd1563

Assuming y'all haven't heard that dissonance before (east.one thousand. when the ABS kicks in usually, either for braking or traction control), the clicking sound and location is curious, just might be the ABS reacting to a bad wheel speed sensor (WSS) signal. Ignoring that for the moment, you saidid the noise happen merely when/after you braked? Or did it happen simply while traveling downwardly the road?
As long every bit the ABS (presumably) is consistently reporting a DTC, and since you said the harness looks skilful, it might exist time to test your new WSS, in case y'all got a faulty one. If you have a voltmeter that tin can measure Air-conditioning, read this article explaining one way to practice it.

No brakes needed. Just start driving and it starts.

Jayd1563

I had this happen to one of my front hub & bearings. I was getting P0035 & P0040 codes with ABS and Traction lights illuminated(I think).

You should exist able to easily look for missing or broken segments in the magnetic ring on your rear hub and bearings from under the vehicle unless you accept the optional dust shields installed.

The cleaved magnetic ring is hidden on a visual inspection by the flexible rubber CV shaft boot IF the problem is on one of the front wheels or y'all bulldoze an AWD Regal.

Tis the season for rear hubs to prove their weaknesses.

Oddly enough the initial problem started when i was driving....hit a slick spot on a corner in my neighborhood, corrected quick(just going 20-25) and the dummy lights popped on.

nizerims

Its worth a few minutes of your time to lay on the footing with a flashlight and accept a quick look. (Don't even demand to jack the vehicle up)
I spent a couple hours one week troubleshooting:
Replaced speed sensors, cleared codes. Lights/DTC again before I got to the cease of the driveway.
Tested and swapped speed sensors.
Removed bicycle well liners. United nations-wrapped, traced, tested and cleaned wires, United nations-plugged and cleaned connectors.
Checked, removed and replaced fuses.

Subsequently I discovered the magnetic ring on the back of the hub and bearing was probably damaged, I replaced the hub and bearing. Problem Fixed, No codes No lights.

Frisbee

Judging by the fantabulous picture that nizerims showed, I realized that the link I provided to test your WSS is not useful for your vehicle. Sorry about that.

It appears that the Buick Regal uses a different manner ("active", non "passive") WSS than what that article covered. Testing a Regal'southward WSS, while not that hard, is not quite every bit easy as testing the older sensors (ones that use a "toothed" band virtually the sensor and generate an AC signal) and y'all'd need to read up on information technology. Of course, it'due south a

lot easier if y'all accept a scantool setup that can read WSS values direct, but most people don't.

I'one thousand starting to retrieve that nizerims may have the right answer to your problem and that y'all should follow his advice before trying to test the WSS.

@nizerims: A minor correction to your 1st post... I retrieve your codes were probably C0035 and C0040 (meaningful ABS codes), not P0035/P0040. And thanks for your posts and picture -- I learned something new and useful today about WSS!

08 Buick Enclave No Reading From Right Rear Wheel Speed Sensor

Rear ABS speed sensor upshot

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