U120C · Manufacturer communications

CHRYSLER · 2026-02-19

Flash: Anti-Lock Brakes (ABS) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Code (DTC): ● **C151D-00 - Tire Pressure Sensor Location Undetermined.** ● U0121-00 - Lost Communication With Anti-lock Brake System (ABS) Control Module. ● U1110 - Lost Vehicle Speed Message. ● U120C - Lost Brake Booster Signal. Customers may also comment on one or more of the following: ● **The Service TPM System message may display on the cluster after a tire rotation.** NOTE: The vehicle will not automatically relearn tire locations and the process will have to be manually performed by a dealer technician. ● Electronic Parking Brake (EPB) is not responding and not allowing the driver to…

CHRYSLER · 2026-02-05

Flash: Anti-Lock Brakes (ABS) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U0121-00 - Lost Communication With Anti-lock Brake System (ABS) Control Module. ● U1110 - Lost Vehicle Speed Message. ● U120C - Lost Brake Booster Signal. Customers may also comment one or more of the following: ● The vehicle will not shift out of Park. NOTE: This takes place when the vehicle in on standstill, the driver stays in the car for more than 10 minutes and if the driver presses the Electric Parking Brake (EPB) button. The Electronic Stability Control (ESC) module wakes up in silent mode and if another wake up request occurs (i.e. pedal press, door, ajar etc.)…

JEEP · 2025-09-27

Not applicable to vehicles built for US market. Multiple Systems Repair Bundle Campaign Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● U11E3-00 - TCM Lost Communication With ESM On DPT CAN. ● B15A1-00 - Media Port 1 Connection. ● U11C2 - Lost Transmission Message. ● U11E4-00 - CAN Communication Messages Missing. ● U120C - Lost Brake Booster Signal. ● U1216-00 - Lost Communication With DASM. ● U121E-00 - Lost Communication With Steering Wheel Cruise Control Switch. ● U1267-00 - No Valid Data From ESM On CAN-C Or CAN-DPT. ● U12A8 - Lost Communication With Master Cylinder Pressure Sensor. ● U1465-00 - Implausible Driver Shift Request Signal Received. ● U1466-00-…

CHRYSLER · 2025-05-19

Vehicle Will Not Shift From Park. Antilock Brake System (ABS) Light On In Cluster. U0121, U1110, U120C Diagnostic Trouble Codes (DTCs) Set. Discussion: If a vehicle has a complaint of will not shift from park and the below DTCs are set, follow the steps below prior to making any repairs. U0121-00-LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) U1110-LOST VEHICLE SPEED MESSAGE U120C-LOST BRAKE BOOSTER SIGNAL Do not replace the ABS module. First, discuss the circumstances of how they park the vehicle. Ask if they manually apply the electric park brake (EPB) after placing the shifter in park and turning off the ignition. These steps could also be followed with a final step of opening the door, changing ignition status, pressing the brake or pressing the EPB switch again. If the owner…