B2797: Transponder communication faulty
Short answer: B2797 means “Transponder communication faulty”. Below is what it means on each of the 2 cars we cover, with a link to the full page for each car.
B2797 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | Transponder communication faulty (B2797/24) | high |
| Toyota Corolla (9th gen, E120) | COMMUNICATION MALFUNCTION NO.1 (B2797/99) | high |
Symptoms
- Warning lamp per chart (see page)
Likely causes
- Transponder communication faulty
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.