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Home >> Infiniti >> 2012 >> FX50 >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 (Engine Control System - DTCS P0441 Through P1168) >> DTC P0603: ECM Power Supply >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2012 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0603 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
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