Possible Causes
WARNING: This page is about a different car, the 2024 Jeep Grand Cherokee L. However, it is still accessible from the selected car via links, so may be relevant.
The (P057B, C053D, C10F5, U0418, U11BF) performance and implausible/lost message faults can set for any of the following:
| POSSIBLE CAUSES |
|---|
| FAULTY HYDRAULIC ASSEMBLY (BPP AND BRAKE SIMULATOR SENSORS ARE INTERNAL) |
| FAULTY BRAKE SYSTEM MODULE (BSM) |
The (U0121, U0129) Loss of Communication faults can set for any of the following:
| POSSIBLE CAUSES |
|---|
| BATTERY OR IGNITION SUPPLY TO BSM OPEN OR SHORTED TO GROUND |
| BSM GROUND CIRCUIT OPEN/HIGH RESISTANCE |
| BSM CAN BUS CIRCUITS SHORTED TO VOLTAGE |
| BSM CAN BUS CIRCUITS SHORTED TO GROUND |
| BSM CAN BUS CIRCUITS OPEN/HIGH RESISTANCE |
| FAULTY BRAKE SYSTEM CONTROL MODULE (BSCM) |
The Wheel Speed Sensor faults can set for any of the following:
| POSSIBLE CAUSES |
|---|
| SNA OR ERROR MESSAGE FROM BSCM |
| WSS SIGNAL CIRCUITS SHORTED TO VOLTAGE |
| WSS SIGNAL CIRCUITS SHORTED TO GROUND |
| WSS SIGNAL CIRCUITS OPEN/HIGH RESISTANCE |
| WSS GROUND CIRCUIT OPEN/HIGH RESISTANCE |
| DAMAGED TONE WHEEL |
| FAULTY WHEEL SPEED SENSOR |
| FAULTY BRAKE SYSTEM CONTROL MODULE (BSCM) |