DTC 01-21: ROM Error; DTC 01-22: RAM Error; DTC 01-2E: EEPROM Error: Description
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 01-21 | A ROM malfunction exists. | Radio receiver assembly |
| 01-22 | A RAM malfunction exists. | |
| 01-2E | A checksum malfunction exists. |