Lost Communication With Anti-Lock Brake System (ABS) Control Module

My 2020 Chevrolet Malibu experienced a sudden and severe electrical failure after driving through normal roadway water. Immediately afterward, the vehicle displayed multiple safety‑critical warnings including loss of power steering assist, Electronic Stability Control (ESC) faults, brake control faults, and reduced propulsion. A GM dealership inspected the vehicle, scanned the modules, and found more than a dozen network and chassis‑related diagnostic trouble codes, including: B3979, U0164, B1325, B3122, U0121, C0196, C0460, B1011, B097B, B3205, C056E, C056D, U0420, U1510, C0545, U0422. These codes indicate failures in the steering system, brake control module, stability control system, body…

ABS Control module and brake booster assembly failed. Vehicle would not crank or start. Disconnected battery negative pole for one minute to reset PCM. Vehicle started. Drove immediately to independent service center without difficulty. Service center confirmed vehicle no start the next morning. Found several DTC codes including U3001 (Control Module Improper Shutdown) U300A (Ignition switch) U0121 (Lost communication with ABS) U0554 (Invalid Data recieved from Accessory Protocol Interface) and U0415 (Invalid Data Received from ABS) Flowchart determined ABS module is bad. Anti Lock Brake System control module failed which rendered the system inoperative. Warning on dash that Anti Lock Brake…

Error codes U1120, U1110, and U0121 all appeared at the same time. Car became undriveable while driving on the highway. Had to pull over with lost power and stop on the side of the highway. Tried to get the car started again and upon reignition the car cycled between air bag and transmission warnings. The car could not drive without reaching 7000+ RPMS at 5 mph. Ended up deserting the vehicle and had it towed to the nearest Jeep dealer. This is the 4th time the vehicle has broken down on the highway.

Wrench light on dash comes on sporadically with message that there is a powertrain malfunction / reduced power. It said the system has detected a powertrain or 4 WD fault. Reduced power may put both the driver and others at risk depending on the area in which this occurs, ex interstate. Dealer has yet to remedy problem. Car has been to the dealer service department 4 times for this issue. Codes present are U0121 (lost communication with ABS control module A), U1012 (invalid internal control module data received from ABS control module), and U3035 (communication authentication signal invalid data)

When driving, my vehicle recieved multple warning messages at the same time. The first message was that my brake was malfunctioning, and when I went to brake, the brakes did not work. Thankfully, I wasn't going too fast when this happened and I was able to bring it down to a slow and turned into a lot. I could've easily hit another vehicle or totaled my car because the brakes simply stopped working. The problem seems to be at the maker level for Audi eTrons - I've read this has been happening. There were no prior warnings or issues whatsoever, in fact, I had a full service in February (3 months before this incident). Audi had a tow truck take it. The code for this is TSB 2072977/3. Their…

Truck worked perfectly fine, then it was parked for a week because I had to have emergency eye surgery. After a week, started truck. Truck started spewing errors U0121 and U0131. Managed to get it to dealership with no steering and am told it is a power steering module failure and the cost to fix is $1800. The truck is barely out of warranty and I have seen numerous posts on forums across the Internet of others that have also experienced problems with their 2019 Colorados and the recalls on the 2015s for the same issue. - Component: Power Steering Module - Safety: Absolutely no power steering, extremely difficult to almost impossible to steer. - Reproduction: Yes, truck is at dealership…

11/14/17 ' PM CHECK ENGINE LIGHT (CEL) 11/15/17 ' HONDA DEALER REFERRED TO CHEVROLET DEALER DUE TO 'PROPRIETARY CODE' 11/16/17 ' 60191 MILES - CHEVROLET DEALER PERFORMED SUBLET REPAIRS - INTAKE MANIFOLD REPLACEMENT 7/10/18 - 74,958 ' AM STARTED ROUGH; SERVICE STABILITRACK, TRACTION CONTROL, & CEL MECHANIC PULLED CODE P0300; CYLINDER #3 MISFIRE REPLACED SPARKS PLUGS - CLEANED FUEL INJECTORS PICKED UP CAR IN PM; ROUGH START - NO INDICATOR LIGHTS 7/11 - 75,029 ' PM CEL WHILE CLIMBING HILL MECHANIC PULLED CODE P0299; ENGINE UNDER BOOST & 'MULTIPLE MISFIRES' MECHANIC SUSPECTED WATER IN FUEL, ADDED LUCAS OIL FUEL TREATMENT 7/12 ' AM STARTED ROUGH; STABILITRACK, TRACTION CONTROL, & FLASH CEL 7/16…

While driving the traction and stability lights came on along with the ESC service light. Also my Lane assist stopped working. It stayed on for at Least 30 mins until I turned off the car and restarted. Stopped at the closest garage and they checked the battery and used a scan tool to identify that it had a fault code U0121 Lost Communication with Anti-lock Brake System Module.

2023 Chevy Traverse LT with 33, 884 miles on it. ABS, TC, Service ESC, Service 4WD, Reduced Steering Assist. OBD2 Codes: C0040, U0414, U0121 populated. There is a short in the Electronic Brake Control Monitor, a part that should last way more than 3 years and 33k miles. $1300 to remove and replace EBCM.

Vehicle will turn off while driving, causing steering wheel to lock up. This has happened 3 times. Engine light has come on this time and has codes U0100, U0121 and U11. I’ve had the vehicle checked at NTB, but was told these must be addressed by Chrysler. My safety has been affected while driving on the interstate and the vehicle shut down.