C1259 LEXUS, TOYOTA: HV SYSTEM REGENERATIVE MALFUNCTION
Description of DTC code C1259
Slip Control ECU communicates with Hybrid Control ECU and regulates brake force taking regenerative control force into account. The Slip Control ECU is responsible for transmitting the enhanced VSC signal to the Hybrid Control ECU, and in turn, receives the operating signal from the Hybrid Control ECU. All this communication is carried out through the CAN bus.
When the C1259 OBDII fault code is stored, it means that an unstable operation was detected by the High Voltage System.