B2798: Frame receiving faulty
Short answer: B2798 means “Frame receiving faulty”. Below is what it means on each of the 2 cars we cover, with a link to the full page for each car.
B2798 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | Frame receiving faulty (B2798/25) | high |
| Toyota Corolla (9th gen, E120) | COMMUNICATION MALFUNCTION NO.2 (B2798/99) | high |
Symptoms
- Warning lamp per chart (see page)
Likely causes
- Frame receiving 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.

