2018 Ram 2500 ABS problem

2018 Ram 2500 ABS/HCU problem. Code C0020-01. 10/2022 Class action law suit filed in Texas for 2017-2018 Ram 2500/3500. 12/2022 NHTSA open investigation into the 2017-2018 Ram 2500/3500 trucks. 4/28/2020 FCA issues “Diagnostics for this DTC are currently under review. When working on a vehicle with an active C0020-01 and testing leads to replacement of both the HCU and ABS Module, order and replace the HCU first. Do not order or replace the ECU. Follow Service Information to replace and bleed the HCU. Then perform a test drive. If the DTC C0020-01 did not reset- repair is complete. If the C0020-01 did return active, replace the ECU and return the parts to FCA.” However nobody at my dealer has heard of break issues on the 2018 Ram 2500. Common enough of a problem FCA sent out communication with the dealers on how to fix this issue.

[@Mike01212]

My 2018 ram 2500 is going to the shop today for ABS problems, 52,000 miles. Will be filing with NHTSA

[@christopherelliott3007]

My 17 is doing same thing for the second time. $1000 a pop this is ridiculous. I appreciate the info, filed a complaint moments ago after watching this video.

[@wisdomspitter7688]

Same here. Already had them warrantied once. I filed a complaint awhile ago. Can’t use 4x4 or cruise. Pain in the ass

[@jeremytoppe5896]

2018 2500. Same exact problems at 57,000 miles. No parts anywhere. Several dealerships confirmed the issue is under “engineering review” until sometime next year. I have filed with NHTSA.

[@wisdomspitter7688]

I found a thread in a forum tonite where guys are putting older ABS pump motor only which is apparently to culprit. OP said he put a 2008 pump motor in and someone else says they used a 2007 Chevy Equinox- same as OEM motor apparently.

[@ericstyer2890]

Thanks Sir checking it out now for my 17, already had ABS and HCU replaced before under warranty and it’s back

[@gsc512]

My hydroboost lines where bad, I feel this over worked the pump motor due to lack of proper pressure, I changed out the lines for El cheapo ebay lines 45 35 or so apiece now. I'm on to the module it does it less but fluid doesn't like being worked so going to bleed the module then if all else fails replace it. Also it's by the front tire and no sealant grease like dielectric was used. So fine mist can get to the module. The factory hydra boost hoses have an inner liner that breaks loose and then it impedes flow that impedance can cause loss of pressure and a hissing noise in the driver's seat that seems like it's coming from underneath the dash

[@pdahl3094]

Same issue on my 2018 RAM. Dealer claimed they had never had the issue before while the complaints are all over the Internet and the parts are backordered so I can't even get it fixed

[@bdubz5150]

Dodge knows about it. Damn sure it's a known issue

[@iblongshia]

I have a 2019 ram 2500 diesel and the brake peddle kept going to the floor. Not lights. The dealer eventually replaced the booster, master cylinder and only helped for a little bit. Third time they replaced the abs module and the brake peddle is solid now.

[@SpeedBumpGarage]

My 18 has 38,000 miles on it and just started this crap too

[@gsc512]

My hydroboost lines where bad, I feel this over worked the pump motor due to lack of proper pressure, I changed out the lines for El cheapo ebay lines 45 35 or so apiece now. I'm on to the module it does it less but fluid doesn't like being worked so going to bleed the module then if all else fails replace it. Also it's by the front tire and no sealant grease like dielectric was used. So fine mist can get to the module. The factory hydra boost hoses have an inner liner that breaks loose and then it impedes flow that impedance can cause loss of pressure and a hissing noise in the driver's seat that seems like it's coming from underneath the dash

[@man-a9857]

I have a 15 2500 with the same issue as well. It’s been difficult finding information on what the exact issue is/how to repair it

[@CKBPuk]

My 2018 Ram's ABS & Traction Control Lights returned flashing yesterday even after I paid almost $1,700 in March 2022 to replace the hydraulic control unit (HCU) at the local dealership. The worst part is that the dealership could not diagnose the flashing record since "the flashing was not happening (or replicate) at the time in the dealership shop." I will file the complaint with NHTSA today. Thanks for your information.

[@tc3sean]

Did you have the "AA" or "AB" part installed

[@MK-ng5fp]

i have the same truck with the same issue Dodge DTC C0044-28, the pressure switch failed in the ABS module

[@shootnandstuff9991]

2018 ram 2500 and having same issues. Only have 65,000 miles on the dang thing.

[@shootnandstuff9991]

Just filed a complaint doubt it’ll do any good it’s filed

[@gsc512]

My hydroboost lines where bad, I feel this over worked the pump motor due to lack of proper pressure, I changed out the lines for El cheapo ebay lines 45 35 or so apiece now. I'm on to the module it does it less but fluid doesn't like being worked so going to bleed the module then if all else fails replace it. Also it's by the front tire and no sealant grease like dielectric was used. So fine mist can get to the module. The factory hydra boost hoses have an inner liner that breaks loose and then it impedes flow that impedance can cause loss of pressure and a hissing noise in the driver's seat that seems like it's coming from underneath the dash

[@rmc3556]

Recently had this issue on my 2018 CTD 3500 SRW. I got lucky because the dealership found the parts (HCU and ABS module) and I was able to use my extended warranty for repair costs. I was also told that this problem was under "engineering review " and that some resolution could be expected around next month. Like others, I feel this should have been a recall from day one of this problem. Another noted time bomb is a nut and bolt on top of the intake manifold (heater element) and because of a ceramic mounting fixture failure the nut can fall off and lodge in the #6 cylinder! I would like to ask a dealer service technician if a strategically placed magnet would be able to stop the nut travel, allowing removal before disaster?

[@fredmackay7896]

I wonder if there’s been any action in Canada?

[@w0lf1969]

If everyone on here doesn't report this to the NHTSA they won't get this issue fixed!

[@brosario7123]

And the BBB

[@ericromer4390]

Just submitted a complaint to NHTSA for my 2018 6.4L 2500.

[@treviskifer9312]

2018 same problem. 85k miles. Dealership said he couldn't order parts till February 21st 2024. Thats a 6 month wait

[@jdsmith556]

My 2018 2500 just started doing this 60k miles. I’m reporting it Monday when the tab opens up. This has been a problem for a long time apparently and has no resolution at this point in 2024 1/2

[@kittysch2]

2018 Ram Power Wagon. ABS/TRACTION ON....I replaced both front-wheel hubs with sensors, still remained. Replaced/not checked, I replaced the 40a fuse and it went away.

[@wetwhistle6136]

Was your issue intermittent before you replaced the fuse?

[@kittysch2]

@Wet Whistle yes. It just came on again. It's recommended to replace the HCU & ABS module. Except the HCU has been on a nationwide backorder. End of March back in stock. What a mess this is. I replaced the sensors as well.

[@js_dillon]

2017 2500 6.4 88000 miles and dealer said ABS pump failure. This after trans just replaced. I dont tow much and no more then 7k when I do. Last RAM.

[@rdwelch2]

How many HDUs have you put in it? I have a 2018 Laramie, 6,7 Diesel that had a fail at @5000, the second fail at @21,000 and now the third at @33,000. Taking the truck in tomorrow to the Chysler, Dodge, Jeep, Ram dealer here in Temple, TX. Created a case through Ram on Friday. A tech(?) is supposed to be checking to see what has failed for the third time...can not be 4 bad HDUs could it? Has to be something else?? GEEZ ! Love the truck but this HDU failing on the average every 8K is ridiculous!

[@tryingtobewise711]

Chrysler to my understanding didn’t have these problems on the Rams until 2017. They’ve already recalled the 2019-2022 for the same problem. Stellantis inherited this problem from Fiat. The Italians and French aren’t taking care of the customers. I am very disappointed.

[@brosario7123]

Hey Robert Welch, what did they tell you?

[@_JayDoe_]

Hcu. Hydraulic control unit is going bad. You can diy but ram needs to calibrate it. 400 for parts but about 800 at the dealer for everything. Ram knows about it, is a huge problem but they're dodging it so they don't have to spend the money.

[@TenTenOutdoors]

I have a 2018 2500 gas. The ABS lights and warning chime goes on and off many times while driving. I assumed it was a short, now I’m wondering if it’s a bad module.

[@tryingtobewise711]

Have the code read. I’m sure it’ll end up being the module. File a complaint with the NHTSA

[@brosario7123]

@@tryingtobewise711 do you happen to know the new part #? I know the bad one, but not what we are all waiting for!

[@tryingtobewise711]

@@brosario7123 no I don’t

[@brosario7123]

@@tryingtobewise711 I found the old ones 68347098AB ABS and 68143491AA HCU , the new ones should be "AB". Ram care is sending the new part to the dealership here in Tx, should be here in 4-5days. We shall see! They have parts if you get them expedited it seems

[@yeahthatswhatisaid6925]

I have the same issue, I have a 2017 ram 2500, this is the third time its gone out. I submitted a complaint to the NHTSA. Cant believe it.

[@gsc512]

My hydroboost lines where bad, I feel this over worked the pump motor due to lack of proper pressure, I changed out the lines for El cheapo ebay lines 45 35 or so apiece now. I'm on to the module it does it less but fluid doesn't like being worked so going to bleed the module then if all else fails replace it. Also it's by the front tire and no sealant grease like dielectric was used. So fine mist can get to the module. The factory hydra boost hoses have an inner liner that breaks loose and then it impedes flow that impedance can cause loss of pressure and a hissing noise in the driver's seat that seems like it's coming from underneath the dash

[@brosario7123]

I got the same issue! 3rd one, 2017 2500. The redesigned part to be ready in august 2023, my truck is in the dealersip shop until then, can't drive it!

[@gsc512]

@@brosario7123 turned out my hydra boost was also leaking the seal under the dash right above the brake pedal had hydraulic fluid all over it. If I bleed the system down and then the module will shut off the ABS thing but as soon as the hydra boost got air back into it. It would throw the ABS light again... I really think the lines are the main problem here in that day have the inner liner break and then it causes pressure fluctuation that ruin the seals. Best of luck with your truck, but I would definitely check your hydroboost and make sure that you're not having any problems there and then if you wiggle the lines, sometimes you can trigger the fault. The hydroBoost line is the two that run up towards the firewall behind the brake master cylinder

[@brosario7123]

Hey yeahthatswhatisaid, did they happen to give you the new part #, I know the old one, just didn't know if ya got it. Thx

[@brosario7123]

@@gsc512 they just filed a class action suit against Ram last week for their defective ABS part issues!

[@MrRicilicious]

I’m having the same issue

[@bigchiefl1285]

My 2018 only has 15k miles and I'm having the same issue already replaced the abs module 2 times and it comes back on...

[@bigchiefl1285]

And now my truck is deleted and I don't want the delaer too re flash the truck and I'm stuck in fixing it or just living with it 🥴

[@gsc512]

My hydroboost lines where bad, I feel this over worked the pump motor due to lack of proper pressure, I changed out the lines for El cheapo ebay lines 45 35 or so apiece now. I'm on to the module it does it less but fluid doesn't like being worked so going to bleed the module then if all else fails replace it. Also it's by the front tire and no sealant grease like dielectric was used. So fine mist can get to the module. The factory hydra boost hoses have an inner liner that breaks loose and then it impedes flow that impedance can cause loss of pressure and a hissing noise in the driver's seat that seems like it's coming from underneath the dash

[@lickme3284]

My 2018 Ram started having these issues at 4,500 miles..didn't even get to 5k yet. Haven't fixed mine yet.

[@multi-transportationsystem11]

kzbin.info/www/bejne/iHPNc6CVYquofKcsi=Y3vSsIbzCweSJKEu

[@jackmonica22]

22000 miles I just started having same issue. 2018 ram 2500 diesel.

[@brosario7123]

My 2017 started at 23k, it only has 30k on it now and its back in the shop for the same thing after 7k miles! In the shop until august!

[@macariogonzalez4444]

Same problem with the ABS 😠

[@blakenoble9468]

I dont see how they wouldnt know its almost impossible to get one for years

[@jonathanmorris2893]

16 1500 is doing it too at 80000 miles

[@jvick953]

I have a 18 5500 same issue 13k miles

[@gsc512]

My hydroboost lines where bad, I feel this over worked the pump motor due to lack of proper pressure, I changed out the lines for El cheapo ebay lines 45 35 or so apiece now. I'm on to the module it does it less but fluid doesn't like being worked so going to bleed the module then if all else fails replace it. Also it's by the front tire and no sealant grease like dielectric was used. So fine mist can get to the module. The factory hydra boost hoses have an inner liner that breaks loose and then it impedes flow that impedance can cause loss of pressure and a hissing noise in the driver's seat that seems like it's coming from underneath the dash

[@jvick953]

@jdalaigh5032 so have you replaced the pump? I was going straight to that. Maybe I should replace the lines also because something must of caused it to go bad so quick. Thanks for the response

[@VernonThweatt-tq6xj]

I have a 2018 2500 with 37k miles that just started doing this. $1000 to fix it.