DTC C13B9-51: SM Valve Learning Not Programmed; DTC C13B9-54: SM Valve Learning Missing Calibration [11/2020 - ]: Description

The No. 2 skid control ECU (brake actuator assembly) stores the individual characteristics of each linear solenoid built into the brake actuator assembly. Based on the stored information, the No. 2 skid control ECU (brake actuator assembly) calibrates the individual differences and controls systems.

The No. 2 skid control ECU (brake actuator assembly) receives the shift position P signal from the EV control ECU through the CAN communication system.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	DTC Output from	Priority	Note
C13B9-51	SM Valve Learning Not Programmed	The SM solenoid valve offset learning value is not stored.	If this DTC is not output after performing SM solenoid valve offset learning, there is no malfunction. Brake fluid leaks No. 2 skid control ECU (brake actuator assembly)	Brake/EPB	B	Output ECU: No. 2 skid control ECU (brake actuator assembly) HINT: During Dealer Mode, related DTCs are cleared.
C13B9-54	SM Valve Learning Missing Calibration	SM solenoid valve offset learning cannot be obtained	If this DTC is not output after performing SM solenoid valve offset learning, there is no malfunction. Brake fluid leaks No. 2 skid control ECU (brake actuator assembly)	Brake/EPB	B	Output ECU: No. 2 skid control ECU (brake actuator assembly)