DTC B2301: Communication Error from Electronic Shift Lever System to Sub Battery Module [12/2017 - 10/2023]: Description
The sub-battery module assembly receives BUBO signals from the shift control ECU.
BUBO signals are PWM communication (Pulse Width Modulation: Modulates pulse width according to duty ratio) and indicates the backup request condition of the shift control ECU.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Memory |
|---|---|---|---|---|---|
| B2301 | Communication Error from Electronic Shift Lever System to Sub Battery Module | This DTC is stored when a malfunction is detected in communication from the shift control ECU to the sub-battery module assembly continuously for 10 seconds. (3 trip detection logic) |
|
Comes on | DTC stored |
HINT:
The details of a DTC can be checked by using the DTC Sub Code of the freeze frame data that was recorded when the DTC was output.
| DTC Sub Code | Detail |
|---|---|
| "4B" | Open or short to +B in shift control ECU signal line (BR (BRin)) |
| "4C" | Short to ground in shift control ECU signal line (BR (BRin)) |
| "4D" | Waveform malfunction in shift control ECU signal line (BR (BRin)) |