DTC P27CD-7F: Pressure Control Solenoid "R" Control Actuator Stuck Off [09/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.

The solenoid (SL8) valve controls K0 clutch according to current control from the TCM.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P27CD-7F	Pressure Control Solenoid "R" Control Actuator Stuck Off	Either condition is met: (2-trip detection logic) When the TCM commands K0 clutch engagement, it is detected 5 times that the difference between the engine speed and motor speed is 400 rpm or more for 0.5 seconds When the TCM commands K0 clutch release, it is detected 5 times that the difference between the engine speed and motor speed is within 30 rpm for 0.5 seconds	Transmission valve body assembly Transaxle assembly with motor	Comes on	Transmission	B	SAE: P27C9

DTC DETECTION CONDITION PATTERNS

		Vehicle Condition
		Pattern 1	Pattern 2
Diagnostic Condition	TCM commands K0 clutch engagement	◦	-
Diagnostic Condition	TCM commands K0 clutch release	-	◦
Malfunction Condition	The difference between the engine speed and motor speed is 400 rpm or more	◦	-
Malfunction Condition	The difference between the engine speed and motor speed is within 30 rpm	-	◦
Duration		5 times for 0.5 seconds or more	5 times for 0.5 seconds or more
Detection Logic		2-trip detection logic	2-trip detection logic

HINT:

This DTC is stored when any of the above detection patterns are met.