DTC C1451-00: High Pressure Tube Air Bleeding [11/2021 - 10/2023]: Description

If air bleeding has not been performed, the No. 2 skid control ECU (brake actuator assembly) stores DTC C1451-00 to prevent the entry of air due to pump motor operation.

DTC C1451-00 is stored when Motor Deactivate is selected, the system will not return to normal until the air bleeding procedure is performed.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Note
C1451-00	High Pressure Tube Air Bleeding	When the vehicle speed is 40 km/h (25 mph) or more, one of the following conditions is met: Using the GTS, "Motor Deactivate" of the "ECB Utility" has been performed. The brake booster with master cylinder assembly has been replaced.	Air bleeding not performed	Comes on	SAE Code: C1451 Output ECU: No. 2 skid control ECU (brake actuator assembly) HINT: DTC C1451-00 is cleared when the conditions return to normal. ECB: Electronically Controlled Brake System

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Note

C1451-00

High Pressure Tube Air Bleeding

When the vehicle speed is 40 km/h (25 mph) or more, one of the following conditions is met:

Using the GTS, "Motor Deactivate" of the "ECB Utility" has been performed.
The brake booster with master cylinder assembly has been replaced.

Air bleeding not performed

Comes on

SAE Code: C1451
Output ECU: No. 2 skid control ECU (brake actuator assembly)

HINT:

DTC C1451-00 is cleared when the conditions return to normal.
ECB: Electronically Controlled Brake System

C1451-00 DTC DETECTION CONDITIONS

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnosis Condition	When the vehicle speed is 40 km/h (25 mph) or more	◦	◦
Malfunction Status	Using the GTS, "Motor Deactivate" of the "ECB Utility" has been performed	◦	-
Malfunction Status	The brake booster with master cylinder assembly has been replaced	-	◦
Detection Time		-	-
Number of Trips		1 trip	1 trip

HINT:

DTC will be output when conditions for either of the patterns in the table above are met.