DTC P2816-71: Pressure Control Solenoid "H" Actuator Stuck [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 TCM detects the gear position based on signals from the transmission revolution sensor and No. 2 transmission revolution sensor.

If the detected gear position differs from the commanded gear position, the TCM detects a mechanical problem in the related solenoid valve, transmission valve body assembly or transaxle assembly with motor.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
P2816-71	Pressure Control Solenoid "H" Actuator Stuck	One of the following conditions is met: (2-trip detection logic) When the TCM commands 2nd or 6th gear, the No. 2 transmission revolution sensor is detected 5 times in neutral for 0.5 seconds or more When the TCM commands 1st gear, the actual gear is detected 5 times as 2nd gear for 0.5 seconds or more When the TCM commands 3rd gear, the actual gear is detected 5 times as 2nd gear for 0.5 seconds or more* When the TCM commands 4th gear, the actual gear is detected 5 times as 2nd gear or 6th gear for 0.5 seconds or more* When the TCM commands 5th gear, the actual gear is detected 5 times as 6th gear for 0.5 seconds or more*	Transmission valve body assembly Transaxle assembly with motor	Comes on	Transmission	B	SAE: P2817

*: Detected 1 time if detected 5 times during previous trip

DTC DETECTION CONDITION PATTERNS

		Vehicle Condition
		Pattern1	Pattern2	Pattern3	Pattern4	Pattern5
Diagnostic Condition	TCM commands 2nd or 6th gear	◦	-	-	-	-
	TCM commands 1st gear	-	◦	-	-	-
	TCM commands 3rd gear	-	-	◦	-	-
	TCM commands 4th gear	-	-	-	◦	-
	TCM commands 5th gear	-	-	-	-	◦
Malfunction Condition	No. 2 transmission revolution sensor is detected 5 times in neutral	◦	-	-	-	-
	2nd gear	-	◦	◦	-	-
	2nd gear or 6th gear	-	-	-	◦	-
	6th gear	-	-	-	-	◦
Duration		5 times for 0.5 seconds or more	5 times for 0.5 seconds or more	5 times for 0.5 seconds or more*	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	2-trip detection logic	2-trip detection logic	2-trip detection logic

*: Detected 1 time if detected 5 times during previous trip

HINT:

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