Service abs

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

zeddy

Senior Member
Joined
Dec 13, 2012
Posts
635
Reaction score
259
Location
Burbank, Ca
Ram Year
2017
Engine
6.4 Hemi
Hey all, my truck just got these two messages. Been looking here and been reading either speed sensors, brake system hydraulic control or
Abs module. Anyway to find out where the issue is? What to look for? Truck has no symptoms. Runs good. Thanks in advance.
IMG_5199.jpegIMG_5198.jpeg
 

62Blazer

Senior Member
Joined
Dec 11, 2019
Posts
1,298
Reaction score
1,658
Location
Midwest
Ram Year
2016
Engine
6.4
Just go have the codes read. Those will at least point you in the right direction. If it is an issue with a wheel speed sensor circuit it will tell you which one to look at. Don't want to sound like an a## but I make this same reply on a vehicle related forum almost daily. Having the specific codes read should always be the first step, versus just randomly guessing and throwing parts at it.
You need to use a diagnostic tool or code scanner that can read the ABS module. It's not something special or anything, but a lot of the cheapo' base level scanners can't read any other module besides the ECM (engine computer). A lot of the big chain auto parts stores use a cheapo' scanner and can't read ABS codes.
 
OP
OP
zeddy

zeddy

Senior Member
Joined
Dec 13, 2012
Posts
635
Reaction score
259
Location
Burbank, Ca
Ram Year
2017
Engine
6.4 Hemi
Thank you. I didn’t know I could still get a code without the check engine light on. I thought a CEL had to be on to get a code.
 

62Blazer

Senior Member
Joined
Dec 11, 2019
Posts
1,298
Reaction score
1,658
Location
Midwest
Ram Year
2016
Engine
6.4
Thank you. I didn’t know I could still get a code without the check engine light on. I thought a CEL had to be on to get a code.
The ECM or other module should store the codes as long as you didn't erase it with a scanner or disconnect the battery.
 
OP
OP
zeddy

zeddy

Senior Member
Joined
Dec 13, 2012
Posts
635
Reaction score
259
Location
Burbank, Ca
Ram Year
2017
Engine
6.4 Hemi
Stupid question, would any of the obd readers from harbor freight be able to read those?
 
OP
OP
zeddy

zeddy

Senior Member
Joined
Dec 13, 2012
Posts
635
Reaction score
259
Location
Burbank, Ca
Ram Year
2017
Engine
6.4 Hemi
I bought a scanner from harbor freight. Looks like mines just a wheel sensor.
IMG_5236.jpeg
 

62Blazer

Senior Member
Joined
Dec 11, 2019
Posts
1,298
Reaction score
1,658
Location
Midwest
Ram Year
2016
Engine
6.4
I bought a scanner from harbor freight. Looks like mines just a wheel sensor.
Beat me to it, but yes Harbor Freight sells scanners that can read the ABS module. For other people reading this post you just have to look at the specs and see if it does or not.
For the wheel speed sensor codes, just remember that the code does NOT say "you need to slap a new wheel speed sensor on it". It says there is a faulty signal coming from that circuit......it COULD be a bad sensor but could also be frayed wiring, loose or corroded connectors, or even a bad hub bearing can cause issues. Point being is you should do some checking before just going out and buying new parts. On my kid's car I've gotten wheel speed sensor codes for each wheel at different times. However nothing was wrong with the actual sensors as it was the tone ring on the wheel hub that would fall apart. You could have replaced the wheel sensors over and over and still get the same code.
 
OP
OP
zeddy

zeddy

Senior Member
Joined
Dec 13, 2012
Posts
635
Reaction score
259
Location
Burbank, Ca
Ram Year
2017
Engine
6.4 Hemi
I ordered and installed a new one. Didn’t see any fraying of the lines but did notice a lot of brake dust caked on the sensor( don’t think that will do anything). I cleaned all around and the connector.

Lights went away.

How can you tell if it’s a bad bearing? Wheels have zero play (when jacked up), no humming/popping noises while driving.
 

62Blazer

Senior Member
Joined
Dec 11, 2019
Posts
1,298
Reaction score
1,658
Location
Midwest
Ram Year
2016
Engine
6.4
I ordered and installed a new one. Didn’t see any fraying of the lines but did notice a lot of brake dust caked on the sensor( don’t think that will do anything). I cleaned all around and the connector.

Lights went away.

How can you tell if it’s a bad bearing? Wheels have zero play (when jacked up), no humming/popping noises while driving.
In regards to a bad bearing, those are the first two things to check. What can happen if the bearing is bad the wheel end has slop and allows the tone ring/magnetic pick up ring on the hub to maybe rub the sensors and ruin it.
 
Top