DTC P0795-7F: Pressure Control Solenoid "C" Actuator Stuck Off [11/2016 - ]: Description

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

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 (SL3) VALVE MALFUNCTION OCCURS (WITHOUT FAIL-SAFE CONTROL):

ECM commanded gear	1st	2nd	3rd	4th	5th	6th	7th	8th
Actual gear during SL3 stuck ON malfunction	3rd	3rd	3rd	3rd	3rd to 5th	7th	7th	7th
Actual gear during SL3 stuck OFF malfunction	1st	2nd	N*	4th	5th	6th	N*	8th

⁽⁾	*: Neutral

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P07957F	Pressure Control Solenoid "C" Actuator Stuck Off	1. Diagnosis Condition, 2. Malfunction Status, 3. Malfunction Time, 4. Other SL3 stuck ON malfunction: Engine coolant temperature is 40°C (104°F) or higher, ATF temperature is -10°C (14°F) or higher, and the vehicle is being driven with the shift lever in D (no malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SLT, SLU and SL) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock control sensor, electronic throttle or CAN2) One of the following occurs: When the ECM commands the transaxle to shift to 1st, 2nd, 4th or 5th gear, the actual gear changes to 3rd gear. When the ECM commands the transaxle to shift to 6th or 8th gear, the actual gear changes to 7th gear. Malfunction status continues for 0.8 seconds or more 2-trip detection logic SL3 stuck OFF malfunction: Engine coolant temperature is 40°C (104°F) or higher, ATF temperature is -10°C (14°F) or higher, and the vehicle is being driven with the shift lever in D (no malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SLT, SLT and SL) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock control sensor, electronic throttle or CAN2) When the ECM commands the transaxle to shift to 3rd or 7th gear, the engine overruns (neutral status). Malfunction status continues for 0.5 seconds or more 2-trip detection logic	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: P0796

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Memory

Note

P07957F

Pressure Control Solenoid "C" Actuator Stuck Off

1. Diagnosis Condition, 2. Malfunction Status, 3. Malfunction Time, 4. Other
SL3 stuck ON malfunction:

Engine coolant temperature is 40°C (104°F) or higher, ATF temperature is -10°C (14°F) or higher, and the vehicle is being driven with the shift lever in D (no malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SLT, SLU and SL) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock control sensor, electronic throttle or CAN2)
One of the following occurs:
1. When the ECM commands the transaxle to shift to 1st, 2nd, 4th or 5th gear, the actual gear changes to 3rd gear.
2. When the ECM commands the transaxle to shift to 6th or 8th gear, the actual gear changes to 7th gear.
Malfunction status continues for 0.8 seconds or more
2-trip detection logic

SL3 stuck OFF malfunction:

Engine coolant temperature is 40°C (104°F) or higher, ATF temperature is -10°C (14°F) or higher, and the vehicle is being driven with the shift lever in D (no malfunctions are detected in the solenoid (SL1, SL2, SL3, SL4, SL5, SL6, SLT, SLT and SL) valves, transmission revolution sensors (NT and NC), coolant temperature sensor, oil temperature sensor, knock control sensor, electronic throttle or CAN2)
When the ECM commands the transaxle to shift to 3rd or 7th gear, the engine overruns (neutral status).
Malfunction status continues for 0.5 seconds or more
2-trip detection logic

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:
P0796