B2795: Key ID mismatch (transponder signal)
Short answer: B2795 means “Key ID mismatch (transponder signal)”. Below is what it means on each of the 2 cars we cover, with a link to the full page for each car.
B2795 on each car
| Car | Meaning on this car | Confidence |
|---|---|---|
| Toyota Passo (1st gen) | Key ID mismatch (transponder signal) (B2795/21) | high |
| Toyota Corolla (9th gen, E120) | UNMATCHED KEY CODE (B2795/99) | high |
Symptoms
- Warning lamp per chart (see page)
Likely causes
- Key ID mismatch (transponder signal)
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.

