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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 117 (Engine Control System (DTC/Circuit Diagnosis) (VQ35DE) (Except Hybrid) (2 Of 3)) >> DTC/Circuit Diagnosis >> DTC P0603, P062F: ECM >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. 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]		 ECM buck up system does not function properly.
  • Harness or connectors

    [ECM power supply circuit is open or shorted.]

  • ECM
P062F CONTROL MODULE
(Internal control module EEPROM error)		 EEPROM (built-in microcomputer) system internal ECM does not function properly.
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