C1544: EPS: engine revolution (REV) signal missing/open/short (note ~2)
Short answer: C1544 means “EPS: engine revolution (REV) signal missing/open/short (note ~2)”. Below is what it means on each of the 2 cars we cover, with a link to the full page for each car.
C1544 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | EPS: engine revolution (REV) signal missing/open/short (note ~2) (C1544/44) | high |
| Toyota Corolla (9th gen, E120) | Engine Tachometer Malfunction (C1544/44) | high |
Symptoms
- Warning lamp per chart
Likely causes
- EPS: engine revolution (REV) signal missing/open/short (note ~2)
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.