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Home >> Infiniti >> 2016 >> QX50 AWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Engine Control System Diagnostic Trouble Codes (DTCS) (P0447-P2138) >> DTC/Circuit Diagnosis >> DTC P0462, P0463: Fuel Level Sensor Circuit Low/High Input >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

NOTE:
  • If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. 
  • If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to  DTC LOGIC  . 
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0462 Fuel level sensor circuit low input An excessively low voltage from the sensor is sent to ECM.
  • Harness or connectors

    (The CAN communication line is open or shorted)

  • Harness or connectors

    (The sensor circuit is open or shorted)

  • Unified meter and A/C amp.
  • Fuel level sensor
P0463 Fuel level sensor circuit high input An excessively high voltage from the sensor is sent to ECM.