DTC C1741 Pressure Sensor

DTC detecting condition:

A fault is detected if two fluid pressure signals in master cylinder are out of normal range.
A fault is detected if the condition that supply voltage for the fluid pressure sensor is out of normal judgment range continues for predetermined time.
A fault is detected if the communication status of fluid pressure sensor is abnormal.
A fault is detected if the data of fluid pressure sensor is abnormal.
A fault is detected if the offset value of fluid pressure sensor signal exceeds a predetermined judgment value.

Trouble symptom:

VDC does not operate sometimes.
The hill hold function may not be operable.

Step	Check	Yes	No
1 CHECK STOP LIGHT SWITCH CIRCUIT AND INSTALLATION CONDITION. Check the stop light switch circuit and the installation condition.	Is the check result OK?	Go to step 2 .	Repair the stop light switch circuit or correct the installation condition. NOTE: If there is malfunction in the stop light circuit, DTC may be recorded in the memory.
2 CHECK OUTPUT OF PRESSURE SENSOR WITH SUBARU SELECT MONITOR. Using the Subaru Select Monitor, select "Data monitor". <Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor.> Read the «Master Cylinder Pressure Sensor » displayed on display.	With the brake pedal released, does the value for «Master Cylinder Pressure Sensor» fall within 0 - 11 bar?	Go to step 3 .	Replace the VDCCM & H/U. <Ref. to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) .>
3 CHECK OUTPUT OF PRESSURE SENSOR WITH SUBARU SELECT MONITOR. Using the Subaru Select Monitor, select "Data monitor". <Ref. to READ CURRENT DATA , OPERATION, Subaru Select Monitor.> Read the «Master Cylinder Pressure Sensor » displayed on display.	When the brake pedal is operated, does the value of «Master Cylinder Pressure Sensor» change in accordance with the brake pedal?	Go to step 4 .	Replace the VDCCM & H/U. <Ref. to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) .>
4 CHECK VDCCM & H/U. Perform the Clear Memory Mode. <Ref. to CLEAR MEMORY MODE .> Perform the Inspection Mode. <Ref. to INSPECTION MODE .> Read the DTC. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .>	Is the same DTC displayed? Replace the VDCCM & H/U.	<Ref. to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM & H/U) .>	Go to step 5 .
5 CHECK DETECTION OF OTHER DTCS FOR VDC. <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .>	Is any other DTC displayed?	Perform the diagnosis according to DTC. <Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) .>	Currently, it is normal. There may have been a temporary poor contact in the harness and connector or a temporary noise interference.