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Help Code C2402 Abs and Stability Control light

2.3K views 16 replies 3 participants last post by  MitsuriLovesCoupes  
#1 ·
If someone can help with a reply, I will be forever in your gratitude, lol Also sorry about the book, just wanted to make sure you had all the proper context
Hello, I have a 2014, 3.8, about 8-9 months ago, replaced breaks and rotors, never bled the fluid, breaks eventually got soft, decided to bled the old fluid and replace it with new a couple months ago, everything was fine and then my breaks got soft again, went to bleed the breaks again but this time with a helper since last time I did it by myself. Breaks felt good, no problems, no codes, drove it around, no problems. Went to take the car out the next day and I had the abs, stability control and the emergency parking break light on, didn't take the car out, took the other car since I was heading to the movies and didn’t have time to assess the problem. Came back and the lights were gone. Thought maybe because I had air in my break lines and now I don’t? Idfk. Anyways, drove at least 200 some miles, breaks worked fine, nothing stood out and gave me any suspicion to think otherwise. Then the abs and stability control light came back on. I was told to go to auto zone and they’d be able to check the abs lights but soon after arriving they said only if the check engine light was on. Other places like Firestone trying to charge me 120$+ just for a diagnostics. So I just said f*ck it and bought a “bluedriver” obd2 scanner, kinda mad because I saw this other one (Creader VII+) the day after I already got bluedriver, for about the same price and it shows more than bluedriver, like the actuator relay, motor relay, solenoids, abs wheel sensors. (Not sure if I should return bluedriver and get the Creader VII+?)(Can someone also tell me if I should, lol) Anyways, scanned my car, got two different codes, C2380 (Status: NOT PRESENT - ABS/TCS/ESC (ESP) Valve Error) and C2402 (Status: MIL/NOT PRESENT - Motor - Electrical : open or short to battery, motor relay, fuse or motor lock fail). I cleared the codes to see if they would return, drove around fine, breaking was good, no problems until I stopped at the store and upon leaving, did a little first gear rip and then the abs and stability control light came on, pulled the code and it was only the “C2402”. I can break just fine, maybe a little “wobble” if heavy breaking occurred, but under normal conditions I notice no threat to my breaking? Thought maybe the battery was low and wasn’t getting enough voltage to the abs module? Tested it and I am getting 12.6 volts with the car off(Just tested it now to reassure and am getting 12.77 volts, not sure if that make a difference lol.) Anyways, didn’t think it was that, checked the fluid multiple times lol, still full from when I topped it off the last time I had bled the breaks. So not low fluid. Checked the fuses labeled ABS1 and ABS2, since it’s that big “18790-01028 F3 150A” fuse I just tested the two little prongs that sit on top of it since it’s bolted in and was getting the same ohms as I was touching the black and red testers (Can’t think of the name right now lol) together, about 00.3-00.1,(Upon looking up more information a couple later about abs lights/how to fix/Error code C2402, I seen a video of a guy unbolting the 150A fuse and testing each prong on the fuse, 8 prongs to be exact, and of course the ABS1 prong was loose, wasn’t testing/giving a reading what so ever and he replaced that huge ass fuse and his abs lights went away, ((wasn’t a Genesis coupe but it was a Hyundai and had the same fuse box setup)) so I am going to try that as well). Went on the remove the plug that I’m guessing powers the abs module? It was connected to the module, I do know that part lmao. I tested the plug that plugs into the module (now that I’m typing this and thinking about it, I don’t think I tested it correctly lmao) and was getting the same voltage as my battery, which is what another video told me should be happening. Plugged it back it and wasn’t sure what to do next, thought maybe it was a abs wheel sensor possibly? Thought maybe I f*cked it up by putting my wheel on somehow? You think I would have messed it up sooner if I did? And you think that would have been my code if it was that? Just made me think it was because when I did the little rip the lights came on? Idk. That’s why I’m here pleading for your knowledge and help, lol. Literally any help would be greatly appreciated, not a whole lot on the internet on this, just bits and pieces you kinda have to glue together to get somewhat of an understanding. Also not the type to have a grubby, greedy dealership have their dick beaters all over my baby and then make me watch and pay them. So yeah seriously, any help, lol.
 
Discussion starter · #3 ·
There is a recall on the A.B.S. modules, I received mine via mail for my 2014 3.8 Ultimate auto, I don't plan on having that recall done myself because I can empathize with the last part of your post, I had a "less than satisfactory" experience with the service department when my coupe was brand new and never went back. However in your case weather or not this recall is actually causing your issue, (it might be), I'd parlay it into getting them to get your brakes working on their dime.
Just a suggestion.
When did you receive this notice? I think I received some recall notice or an attempt for one? Idk. But it was kinda recent. I was trying to get my 150A fuse that is for ABS1 and ABS2 out but there’s a stupid harness holding the wire that connects to the fuse, tried unbolting the harness, just a coolant line right in the way lol. Dropped my socket, twice, lmao. Gave up because I freaking hate working in the dark lol. And yeah all the dealers in my area are booked up for weeks or the people answering the phone just sound rude as f*ck like I’m freaking wasting their time. There’s a highly rated mechanic shop but even they are booked for weeks. So that’s why I opt to work on it myself.
 
Discussion starter · #6 ·
I received the paper notice in the mail approximately one month ago and I received a voice message from the dealership just last week.
This is a joke. How is “replacing the fuse” going to stop the abs module from leaking fluid. Tf? Funny how I think that the fuse is my problem too, but just weird because it was after I bled the breaks for a second time.
Noticed my light were off when I started the car but then after pulling out of the driveway, only gave it the tiniest bit of gas because it wasn’t even warmed up fully yet and they both came back on.
Was hoping to get to check the fuse but ran out of daylight and hate working at night…
 
Discussion starter · #7 ·
I received the paper notice in the mail approximately one month ago and I received a voice message from the dealership just last week.
And I believe I remember getting this letter as well, just remember laughing because it didn’t even give a full remedy, they’re just like “yeah, we’ll keep you updated using 18th century technology.” What happens if someone’s abs fails, that’s a lawsuit cause they know about it but are “still working” to fix it…😞
 
Discussion starter · #10 ·
"A.B.S. module may leak brake fluid internally and cause an electrical short which can result in a engine compartment fire while driving or parked". Sounds like their going to have to replace the A.B.S. module which will require them to bleed your brake system. I'd bet this really is what's causing your problem and even if it somehow isn't the module is for sure a known problem so just get them to fix that if for no other reason but to eliminate that as the cause. I don't get what all their talk about "replacing fuses" is all about, sounds like a bunch of nonsense.
Maybe the fuse shorts out causing the abs to stop or have problems/not function properly. Which hopefully is my problem now that I’m experiencing. Sounds like they know something we don’t yet…
 
Discussion starter · #11 ·
So I traded in the blue driver scanner for a Ancel FX2000 scanner since it tells you more, like wheel sensors, motor relay, if the abs motor is working, stuff like that, kinda mad at myself because it was supposed to be the Creader VII+ but I am a stoner and I forget sh*t. Anyways, it told me the motor relay is not working and obviously the abs motor is not working, assuming because the relay isn’t working. In the fuse box, is it that big 150A fuse that is the relay? I know relay’s are usually little square boxes? Just don’t/can’t find anything else that says abs on it in there. Still haven’t second attempted on removing the 150A yet, just been being lazy, lol, and was waiting for the new scanner so I could get an “official report” from my vehicle lol. But seriously does anyone know about the relay for the abs motor? Any knowledge is amazing because there is hardly anything out there for this, like no real explanation. Just bits and pieces I have to glue together.
 
Discussion starter · #13 ·
You can check your VIN for any recalls.


Try spraying some WD40 like lube on the long fuse.

It looks like the ABS relay is inside the ESC module, AKA the ABS pump.

View attachment 80378
Not sure how I feel about spraying lube into/onto a fuse lol. So basically it looks like my esc module needs to be replaced or the “motor” (idk if that’s the actual motor or if it’s the relay) I called a Hyundai dealership and they said I would have to leave it there for a 24 hour diagnostics, and if it’s related to the recall they can’t do anything till the official remedy for the recall is posted. My car isn’t coming up for that recall, but it just seems sus that my abs light and stability light are on and there is this recall. Have you seen the Genesis that was on fire on YouTube? The guy posted it like 6 days ago. I don’t want my baby to catch on fire. Or if I was to drive it and needed to break hard and have it lock up and wreck it. That would also suck.
 
Discussion starter · #15 ·
I know this is going kinda O.T. but if the dealer/Hyundai refuse to correct a known safety issue like that it may be worth consulting a attorney specializing in this type of thing, sometimes just a certified letter of intent is enough to get them to just "fix the Damm car", instead of suffering the bad publicity. I get this is kinda extreme and we're kinda going off in the weeds here but we all pay alot for our cars it would be kinda nice to get our money's worth, unfortunately sometimes you have to know just the right buttons to push to get things done.
I mean the “final” remedy is coming in April for the recall. I mean they’re doing the recall probably because of lawsuits. Yeah I wish I could just get this fixed becuase I already miss driving my car😭
 
Discussion starter · #17 ·
Went to the dealership finally, was told what the problem was and how to fix it, if anyone is interested I will post it, just like this post and I’ll post it.
lol, well since nobody asked, I’ll just tell you anyways, it was the abs hydrolic unit, I guess after bleeding my breaks for the second time, I got more air in the lines somehow and fried the unit. Thankfully when I took it to the dealership, they order the right part for the wrong car, a Santa Fe 19-21, I actually paid for that part, 1,300$ tax and all, but when they went to put the part on the tech said it was for the wrong car, the hydrolic unit for a 2014 Genesis Coupe is 3,300$ lol. So they got the right part and didn’t charge me the difference, which is a Godsend if you ask me, also since I had to bring the car back 3 different times, they hooked it up on the labor price, so I got a nice discount on that. Moral of the story, just let the pro’s bleed your breaks if you’ve never bled breaks before, lmao. It’s not a hard job, it’s just that you can f*ck up some expensive sh*t if you don’t do it right, I mean that’s with a lot of things, but all of this headache could have been avoided for alottttt cheaper lol.
Thank you everyone for replying and helping out, we Geny owners need to stick together and look out for each other!