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Home >> Infiniti >> 2012 >> G25 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (EV Control System) >> DTC/Circuit Diagnosis >> DTC P31C8, P31C9: Normal Charge Relay >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION AND POSSIBLE CAUSES

DTC Trouble diagnosis name (Malfunction type) DTC detecting condition Possible cause
P31C8 ON BOARD CHARGER SYSTEM VCM received normal charge relay (-) stuck signal from on board charger.
  • Harness or connectors
  • Normal charge relay
  • On-board charger
P31C9 VCM received normal charge relay (+) stuck signal from on board charger.