DTC P0775-7F: Pressure Control Solenoid "B" Actuator Stuck Off [12/2019 - 10/2022]: Description

Based on signals from the transmission revolution sensors (NT and NC), the actual gear is detected.

The ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical malfunctions of the solenoid valves, transmission valve body assembly and automatic transaxle assembly (clutch, brake, gear, etc.).

HINT:

ACTUAL GEAR WHEN SOLENOID (SL2) VALVE MALFUNCTION OCCURS (WITHOUT FAIL-SAFE CONTROL):

ECM commanded gear	1st	2nd	3rd	4th	5th	6th	7th	8th
Actual gear during SL2 stuck ON malfunction	5th	5th	3rd to 5th	4th to 5th	5th	6th	7th	8th
Actual gear during SL2 stuck OFF malfunction	1st	2nd	3rd	4th	N*	N*	N*	N*

*: Neutral

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P0775-7F	Pressure Control Solenoid "B" Actuator Stuck Off	All of the following conditions are met (2-trip detection logic): Engine coolant temperature is 40°C (104°F) or higher. ATF temperature is -10°C (14°F) or higher. The vehicle is being driven with the shift lever in D. No malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SL, SLU and SLT) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock sensor, crankshaft position sensor circuits, electronic throttle or CAN communication system. Any of the following conditions are met: When the ECM commands the transaxle to shift to 1st, 2nd, 3rd or 4th gear, the actual gear changes to 5th gear for 0.8 seconds or more. When the ECM commands the transaxle to shift to 5th, 6th, 7th or 8th gear, the engine overruns (neutral status) for 0.5 seconds or more.	Solenoid (SL1) valve Solenoid (SL2) valve Solenoid (SL3) valve Solenoid (SL4) valve Solenoid (SL5) valve Solenoid (SL6) valve Solenoid (SL) valve Solenoid (SLU) valve Solenoid (SLT) valve Transmission valve body assembly Torque converter assembly Automatic transaxle assembly (clutch, brake, gear, etc.)	Comes on	DTC stored	SAE Code: P0776

DTC DETECTION CONDITION PATTERNS:

		Vehicle Condition
		Pattern 1	Pattern 2	Pattern 3	Pattern 4
Diagnostic Condition	Engine coolant temperature is 40°C (104°F) or higher.	◦	◦	◦	◦
	ATF temperature is -10°C (14°F) or higher.	◦	◦	◦	◦
	The vehicle is being driven with the shift lever in D.	◦	◦	◦	◦
	No malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SL, SLU and SLT) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock sensor, crankshaft position sensor circuits, electronic throttle or CAN communication system.	◦	◦	◦	◦
Malfunction Condition	When the ECM commands the transaxle to shift to 1st gear, the actual gear changes to 5th gear.	◦	-	-	-
	When the ECM commands the transaxle to shift to 2nd gear, the actual gear changes to 5th gear.	-	◦	-	-
	When the ECM commands the transaxle to shift to 3rd gear, the actual gear changes to 5th gear.	-	-	◦	-
	When the ECM commands the transaxle to shift to 4th gear, the actual gear changes to 5th gear.	-	-	-	◦
Duration		0.8 seconds or more	0.8 seconds or more	0.8 seconds or more	0.8 seconds or more
Detection Logic		2-trip detection logic	2-trip detection logic	2-trip detection logic	2-trip detection logic

DTC DETECTION CONDITION PATTERNS:

		Vehicle Condition
		Pattern 5	Pattern 6	Pattern 7	Pattern 8
Diagnostic Condition	Engine coolant temperature is 40°C (104°F) or higher.	◦	◦	◦	◦
	ATF temperature is -10°C (14°F) or higher.	◦	◦	◦	◦
	The vehicle is being driven with the shift lever in D.	◦	◦	◦	◦
	No malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SL, SLU and SLT) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock sensor, crankshaft position sensor circuits, electronic throttle or CAN communication system.	◦	◦	◦	◦
Malfunction Condition	When the ECM commands the transaxle to shift to 5th gear, the engine overruns (neutral status).	◦	-	-	-
	When the ECM commands the transaxle to shift to 6th gear, the engine overruns (neutral status).	-	◦	-	-
	When the ECM commands the transaxle to shift to 7th gear, the engine overruns (neutral status).	-	-	◦	-
	When the ECM commands the transaxle to shift to 8th gear, the engine overruns (neutral status).	-	-	-	◦
Duration		0.5 seconds or more	0.5 seconds or more	0.5 seconds or more	0.5 seconds or more
Detection Logic		2-trip detection logic	2-trip detection logic	2-trip detection logic	2-trip detection logic

HINT:

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