DTC U0101: Lost Communication with TCM; DTC U0123: Lost Communication with Yaw Rate Sensor Module; DTC U0129: Lost Communication with Brake System Control Module; DTC U0142: Lost Communication with Body Control Module "B"; DTC U0293: Lost Communication with HV ECU [10/2015 - ]: Description
WARNING: This page is about a different car, the 2018 Toyota Avalon, 2017 Toyota Avalon, and 2016 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.
When a malfunction is detected between various ECUs and sensors, these DTCs are stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0101 | Lost Communication with TCM | While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the TCM (hybrid vehicle control ECU assembly) and the forward recognition camera is detected for approximately 5 seconds or more. |
|
| U0123 | Lost Communication with Yaw Rate Sensor Module | While the vehicle is being driven at 1 km/h or 1 mph or more, a communication error between the yaw rate sensor (airbag ECU assembly) and the forward recognition camera is detected for approximately 5 seconds or more. |
|
| U0129 | Lost Communication with Brake System Control Module | 2 seconds after the power switch is turned on (IG), a communication error between the skid control ECU and the forward recognition camera is detected for approximately 5 seconds or more. |
|
| U0142 | Lost Communication with Body Control Module "B" | 2 seconds after the power switch is turned on (IG), a communication error between the main body ECU (multiplex network body ECU) and the forward recognition camera is detected for approximately 5 seconds or more. |
|
| U0293 | Lost Communication with HV ECU | 2 seconds after the power switch is turned on (IG), a communication error between the hybrid vehicle control ECU assembly and the forward recognition camera is detected for approximately 5 seconds. |
|