DTC 2-1 EEPROM Communication Error; DTC 2-2 EEPROM Checksum Error: Description
These DTCs are output when an error occurs in the CPU of the mayday ECU.
DIAGNOSTIC TROUBLE CODE
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| 2-1 | Internal communication error in mayday ECU | Mayday ECU |
| 2-2 | Checksum error in mayday ECU | Mayday ECU |
NOTICE:
CURRENT DIAGNOSTIC TROUBLE CODE
| Current DTC | Historic DTC only |
|---|---|
| Disconnect and reconnect battery. Check for current DTCs. If DTC returns, replace mayday ECU and mayday battery (backup battery). | If this is only a historic DTC, the system has already recovered normally and should be operating normally. Clear historic DTCs. |