DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0125: Lost Communication with Yaw Rate Sensor Module; DTC U0126: Lost Communication with Steering Angle Sensor Module; DTC U0129: Lost Communication with Brake System Control Module [08/2019 - ]: Description
These DTCs are stored when a communication malfunction occurs between ECUs that perform pre-collision system control.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100 | Lost Communication with ECM / PCM "A" | When the vehicle is being driven at a speed of 5 km/h (4 mph) or more, a communication error between the ECM and millimeter wave radar sensor assembly is detected for approximately 4 seconds. |
|
| U0125 | Lost Communication with Yaw Rate Sensor Module | When the vehicle is being driven at a speed of 5 km/h (4 mph) or more, a communication error between the yaw rate sensor (airbag sensor assembly) and millimeter wave radar sensor assembly is detected for approximately 1 second. |
|
| U0126 | Lost Communication with Steering Angle Sensor Module | When the ignition switch is ON, a communication error between the steering angle sensor (spiral cable sub-assembly) and millimeter wave radar sensor assembly is detected for approximately 1 second. |
|
| U0129 | Lost Communication with Brake System Control Module | When the ignition switch is ON, a communication error between the skid control ECU (master cylinder solenoid)*1 or skid control ECU (brake actuator assembly)*2 and millimeter wave radar sensor assembly is detected for approximately 3 seconds. |
|
- *1: for Hydraulic Brake Booster
- *2: for Vacuum Brake Booster