DTC C1247/47: Stroke Sensor Malfunction; DTC C1392/48: Stroke Sensor Zero Point Calibration Undone [03/2017 - 09/2018]: Description

The brake pedal stroke sensor assembly sends a signal about the pedal stroke to the skid control ECU assembly.

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	Note
C1247/47	Stroke Sensor Malfunction	171 172 173 174 175 181 182 183	INF Code: 171 Sensor supply voltage (VCSK) is 4.7 V or less, or 5.4 V or more for 0.2 seconds or more. INF Code: 172 Sensor output voltage 1 (SKS) is 6% or less, or 90% or more of sensor supply voltage (VCSK) for 0.2 seconds or more. INF Code: 173 Sensor output voltage 2 (SKS2) is 6% or less, or 90% or more of sensor supply voltage (VCSK) for 0.2 seconds or more. INF Code: 174 The stroke value converted from the sensor output 1 (SKS) fluctuates due to noise. INF Code: 175 The stroke value converted from the sensor output 2 (SKS2) fluctuates due to noise. INF Code: 181 A power source related malfunction other than INF codes 171, 172, 173, 174, 175, 182, or 183 occurs. INF Code: 182 Difference between the output voltage of sensor 1 (SKS) and the output voltage of sensor 2 (SKS2) differs. INF Code: 183 Compared to the output voltage of sensor 1 (SKS) and sensor 2 (SKS2), the output voltage of master cylinder pressure sensor 1 (PMC1) and master cylinder pressure sensor 2 (PMC2) are low.	INF Code: 171 Open or short in brake pedal stroke sensor assembly power supply circuit Improperly connected connector, deformation or corrosion of terminals Skid control ECU assembly INF Code: 172, 173, 174, 175, 181, 182 Open or short in wire harness Improperly connected connector, deformation or corrosion of terminals Brake pedal stroke sensor assembly INF Code: 183 Open or short in wire harness Improperly connected connector, deformation or corrosion of terminals Brake pedal stroke sensor assembly Brake actuator assembly	Electronically controlled brake system DTC
C1392/48	Stroke Sensor Zero Point Calibration Undone	-	Zero point calibration of brake pedal stroke sensor assembly is unfinished.	Brake pedal stroke sensor zero point calibration incomplete (Initialization and calibration of linear solenoid valve incomplete)	Electronically controlled brake system DTC

DTC No.	Brake warning light / yellow (minor malfunction) code	ABS warning light code	Slip indicator light code	Brake hold standby indicator light code
C1247	47	42	45	21
C1392	48	42	45	21