DTC C1AEC Front Sensor Communication Malfunction: Description

This DTC is stored when there is an open or short circuit in the communication line between the front sensors and the clearance warning ECU, or when there is a malfunction in a front sensor.

DTC Combination Table

DTC DETECTION CONDITION CHART

DTC No.	C1AEC	C1AE1	C1AE4	Trouble Area
DTC Detection Condition	◦	◦	◦	Front left sensor malfunction Front right sensor malfunction Open or short in wire harness between front left sensor and clearance warning ECU Open or short in wire harness between front left sensor and front right sensor Clearance warning ECU malfunction
DTC Detection Condition	-	◦	◦
◦: DTC is output
-: DTC is not output

Fig 1: Identifying Front Ultrasonic Sensor Position

DTC DETECTION CONDITION CHART

DTC No.	DTC Detection Condition	Trouble Area
C1AEC	Malfunctions of all front sensors are detected during initialization mode after the engine switch is turned on (IG)	Front No. 1 ultrasonic sensor circuit Clearance warning ECU assembly