DTC Detection Logic
WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. |
CONSULT screen terms (Trouble diagnosis content) |
DTC detecting condition |
Possible cause |
| P0603 |
ECM BACK UP CIRCUIT [Internal control module keep alive memory (KAM) error] |
- Malfunction in the internal back up RAM of ECM.
- Malfunction in the internal EEP-ROM system of ECM.
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