P0773: Lock-up (LUC) solenoid open/short
Short answer: P0773 means “Lock-up (LUC) solenoid open/short”. Below is what it means on each of the 3 cars we cover, with a link to the full page for each car.
P0773 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | Lock-up (LUC) solenoid open/short (P0773/65) | high |
| Toyota Vitz (1st gen) | Shift solenoid valve SL electrical | medium |
| Toyota Corolla (9th gen, E120) | SL SOLENOID VALVE ELECTRICAL MALFUNCTION (P0773/64) | high |
| Toyota Corolla (9th gen, E120) | SL SOLENOID VALVE ELECTRICAL MALFUNCTION (P0773/64) | high |
| Toyota Corolla (9th gen, E120) | SL SOLENOID VALVE ELECTRICAL MALFUNCTION (P0773/64) | high |
Symptoms
- Warning lamp per chart (see page)
Likely causes
- Lock-up (LUC) solenoid open/short
What to check, in order
- Follow manual section procedure for this code
Causes and checks above are the general meaning. The exact test steps and values differ by car: open your car’s page.

