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Home >> Infiniti >> 2012 >> G37 Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0456 Through P1217 (Convertible) >> DTC P0603: ECM Power Supply >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

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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