DTC U029A-123: Lost Communication with Hybrid Battery Pack Sensor Module [12/2014 - ]: Description
The battery smart unit detects the HV battery conditions (voltage, current, and temperature) and battery cooling fan voltage, and sends the detected signals to the hybrid vehicle control ECU via serial communication.
| DTC No. | INF Code | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U029A | 123 | Serial communication error between the hybrid vehicle control ECU and battery smart unit: The hybrid vehicle control ECU cannot receive signals from the battery smart unit correctly. (1 trip detection logic) |
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