DTC 2-1; 2-2: EEPROM Communication Error; EEPROM Checksum Error: Description
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
These DTCs are output when an error occurs in the CPU of the mayday ECU assembly.
DTC DETECTION CONDITION AND TROUBLE AREA
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| 2-1 | Internal communication error in mayday ECU | Mayday ECU assembly |
| 2-2 | Checksum error in mayday ECU | Mayday ECU assembly |
NOTICE:
CURRENT DTC AND HISTORIC DTC REFERENCE
| 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. |