DTC U0073: Control Module Communication Bus OFF; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0129: Lost Communication with Brake System Control Module [02/2017 - 10/2017]: Description
WARNING: This page is about a different car, the 2019 Toyota C-HR and 2018 Toyota C-HR. However, it is still accessible from the selected car via links, so may be relevant.
These DTCs are stored when the CAN communication system is malfunctioning.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| U0073 | Control Module Communication Bus OFF | Lost communication with CAN communication line | CAN communication system | - |
| U0100 | Lost Communication with ECM / PCM "A" | Lost communication with ECM |
|
- |
| U0129 | Lost Communication with Brake System Control Module | Lost communication with brake actuator assembly (skid control ECU) |
|
- |