The Toyota Code P0776 indicates a shift solenoid valve SL2 stuck ON or a brake control valve malfunction. This can prevent the vehicle from shifting to the 5th and 6th gears, as the ECM will determine there is a malfunction if it directs the transmission to these gears, but the actual gear is only shifted to the 4th. This issue can be caused by several factors, such as a shift solenoid valve SL2 remaining open, a shift solenoid valve SLT remaining open or closed, a blocked valve body, or a problem with the automatic transmission itself. To prevent and repair this issue, it is essential to understand the causes and solutions associated with Toyota Code P0776.
👀Look at this: Toyota Code P0A7A-122
Causes and Solutions for Toyota Code P0776
| Causes | Solutions |
|---|---|
| Shift solenoid valve SL2 remains open | Replace the shift solenoid valve SL2 and flush the transmission fluid |
| Shift solenoid valve SLT remains open or closed | Repair the shift solenoid valve SLT |
| The valve body is blocked (brake control valve) | Replace the brake control valve and flush the transmission fluid |
| Automatic transmission (clutch, brake or gear, etc. ) | Replace any faulty automatic transmission components and flush the transmission fluid. |
Shift Solenoid Valve SL2 Malfunction
The Toyota Code P0776 is triggered when the shift solenoid valve SL2 remains open. This can prevent the vehicle from shifting to the 5th and 6th gears, as the ECU will detect a malfunction when attempting to change to these gears. The shift solenoid valve SL2 should be replaced to repair this issue, and the transmission fluid should be flushed.
Shift Solenoid Valve SLT Malfunction
A shift solenoid valve SLT malfunction can also cause the Toyota Code P0776. If the valve remains open or closed, the ECU will detect a fault, and the vehicle cannot shift to the 5th and 6th gears. To fix this issue, the shift solenoid valve SLT should be repaired.
Valve Body Blocked
A blocked valve body or brake control valve can also trigger the Toyota Code P0776. If the valve is blocked, the ECU will detect a fault, and the vehicle cannot shift to the 5th and 6th gears. The brake control valve should be replaced to fix this issue, and the transmission fluid should be flushed.
Automatic Transmission Components
The Toyota Code P0776 can also be caused by a problem with the automatic transmission, such as a faulty clutch, brake, or gear. If this is the case, the ECU will detect a fault, and the vehicle cannot shift to 5th and 6th gears. The faulty transmission components should be replaced to repair this issue, and the transmission fluid should be flushed.
Conclusion
The Toyota Code P0776 indicates a shift solenoid valve SL2 stuck ON or a brake control valve malfunction. To prevent and repair this issue, it is essential to understand the causes and solutions associated with Toyota Code P0776. Repairing the problem involves replacing or repairing faulty components, such as the shift solenoid valves SL2, SLT, and brake control valves. Flushing the transmission fluid is also recommended after any repair to ensure the transmission runs as it should.