P1780: Switch solenoid open/short
Short answer: P1780 means “Switch 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.
P1780 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | Switch solenoid open/short (P1780/66) | high |
| Toyota Vitz (1st gen) | Park / neutral position switch | medium |
| Toyota Corolla (9th gen, E120) | NEUTRAL START SWITCH MALFUNCTION (P1780/97) | high |
Symptoms
- Warning lamp per chart (see page)
Likely causes
- Switch 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.