DTC P0795-7F: Pressure Control Solenoid "C" Actuator Stuck Off [10/2016 - 10/2017]: Description
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2024 Lexus IS 300, 2023 Lexus IS 300, 2022 Lexus IS 300, 2021 Lexus IS 300, and 2020 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
Based on signals from the transmission revolution sensors (NT, SP2 and NC3), the actual gear is detected.
If the detected gear is different than the commanded gear, the ECM detects related mechanical problems in the shift solenoid valves, transmission valve body assembly and automatic transmission assembly (clutch, brake, gear, etc.).
HINT:
ACTUAL GEAR WHEN A MALFUNCTION OCCURS IN SOLENOID (SL3) VALVE (WITHOUT FAIL-SAFE CONTROL):
| ECM commanded gear |
1st |
2nd |
3rd |
4th |
5th |
6th |
7th |
8th |
| Actual gear during SL3 stuck ON malfunction |
3rd |
1st |
3rd |
4th |
5th |
6th |
7th |
N* |
| Actual gear during SL3 stuck OFF malfunction |
1st |
2nd |
N (1st)* |
4th |
5th |
6th |
N* |
8th |
*: Neutral
| DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
Memory |
Note |
| P0795-7F |
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 more, ATF temperature is -10°C (14°F) or more, and the vehicle is driven with the shift lever in D (no malfunctions are detected in solenoid (SL1, SL2, SL3, SL4, SL5, SC1 and SC2) valves, transmission revolution sensors (NT, NC3, SP2), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2)
- One of the following occurs:
- When the ECM commands the transmission to shift to 1st, the actual gear changes to 3rd gear.
- When the ECM commands the transmission to shift to 2nd or 8th, the engine overruns (neutral status).
- Malfunction status continues for 0.6 seconds or more
- 2-trip detection logic
SL3 stuck OFF malfunction:
- Engine coolant temperature is 40°C (104°F) or more, ATF temperature is -10°C (14°F) or more, and the vehicle is driven with the shift lever in D (no malfunctions are detected in Solenoid (SL1, SL2, SL3, SL4, SL5, SC1 and SC2) valves, transmission revolution sensors (NT, NC3, SP2), water temperature sensor, oil temperature sensor, knock control sensor, electronic throttle, or CAN2)
- When the ECM commands the transmission to shift to 3rd or 7th, the engine overruns (neutral status).
- Malfunction status continues for 0.5 seconds or more
- 2-trip detection logic
|
- Solenoid (SC1) valve
- Solenoid (SC2) valve
- Solenoid (SL1) valve
- Solenoid (SL2) valve
- Solenoid (SL3) valve
- Solenoid (SL4) valve
- Solenoid (SL5) valve
- Transmission valve body assembly
- Torque converter assembly
- Automatic transmission assembly (clutch, brake, gear, etc.)
|
Comes on |
DTC stored |
SAE Code:
P0796 |