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Home >> Infiniti >> 2013 >> M35h >> Repair and Diagnosis >> External Pages >> Different car >> Section 4 (Hybrid Control System) >> DTC/Circuit Diagnosis >> DTC P311F: Pre-Charge Relay >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2012 Infiniti M35h. However, it is still accessible from the selected car via links, so may be relevant.
DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P311F PRE CHARGE RELAY When HPCM detects traction motor inverter (Pre-charge voltage abnormality) When HPCM detects traction motor inverter voltage is more than 100V during pre-charge.
  • DC/DC converter
  • Lithium ion battery ground circuit is open