C1555: EPS: motor relay in EPS ECU (note ~3)
Short answer: C1555 means “EPS: motor relay in EPS ECU (note ~3)”. Below is what it means on each of the 2 cars we cover, with a link to the full page for each car.
C1555 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | EPS: motor relay in EPS ECU (note ~3) (C1555/55) | high |
| Toyota Corolla (9th gen, E120) | EMPS Relay Circuit (C1555/55) | high |
Symptoms
- Warning lamp per chart
Likely causes
- EPS: motor relay in EPS ECU (note ~3)
What to check, in order
- Follow manual
Causes and checks above are the general meaning. The exact test steps and values differ by car: open your car’s page.