DTC C1365: Accumulator Pressure Sensor [10/2020 - 10/2023]: Description

The accumulator pressure sensor is built into the brake actuator assembly.

The skid control ECU assembly detects the accumulator pressure from the data sent from the accumulator pressure sensor, and then starts and stops the pump motor by operating the ABS motor relay.

This DTC may be stored if the accumulator pressure drops due to frequent braking (this is not a malfunction).

DTC No.	Detection Item	INF Code	DTC Detection Condition	Trouble Area	MIL	Note
C1365	Accumulator Pressure Sensor	- 211 212 214 215	INF Code: - Absolute value of difference between previous accumulator pressure sensor value and current accumulator pressure sensor value is 7.5 MPa (76.5kg/cm² , 1088 psi) or more for 0.054 seconds or more consecutively. INF Code: 211 Sensor supply voltage 1 (VCM) is 4.7 V or less, or 5.3 V or more for 0.05 seconds or more. INF Code: 212 Output voltage of accumulator pressure sensor (PAC1) is 0.25 V or less, or 4.53 V or more for 0.05 seconds or more. INF Code: 214 While the motor is off, the total of the wheel cylinder pressure sensor values of all 4 wheels increases but the accumulator pressure changes little for 0.5 seconds or more. INF Code: 215 Output voltage of accumulator pressure sensor (PAC1) is stuck at 4.53 V or less.	INF Code: -, 211 Open or short in accumulator pressure sensor power supply circuit Improperly connected connector, deformation or corrosion of terminals Accumulator pressure sensor Brake actuator assembly Skid control ECU assembly INF Code: 212, 214, 215 Open or short in accumulator pressure sensor power supply circuit Improperly connected connector, deformation or corrosion of terminals Brake actuator assembly Skid control ECU assembly	Comes on	INF Code -: SAE Code C121A INF Code 211: SAE Code C14D0 INF Code 212: SAE Code C0571 and C0572 INF Code 214: SAE Code C0574 (Case 1) INF Code 215: SAE Code C0574 (Case 2)