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Home >> Nissan-Datsun >> 2014 >> Versa Note S Plus >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes & Symptom Tests) >> DTC/Circuit Diagnosis >> DTC P0603: ECM Power Supply >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

DTC No. CONSULT screen terms (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
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