DTC Detection Logic
WARNING: This page is about a different car, the 2013 Infiniti M56. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. |
Trouble diagnosis name (Trouble diagnosis content) |
DTC detecting condition |
Possible cause |
| P0603 |
ECM BACK UP/CIRCUIT (ECM power supply circuit) |
ECM back up RAM system does not function properly. |
- Harness or connectors [ECM power supply (back up) circuit is open or shorted.]
- ECM
|