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Home >> Infiniti >> 2014 >> QX80 AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - DTCS P0460 To P1226 >> DTC P0462, P0463: Fuel Level Sensor >> 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 ".

This diagnosis indicates the former, to detect open or short circuit malfunction.

DTC No. Trouble diagnosis name (Trouble diagnosis content) DTC detecting condition Possible cause
P0462 FUEL LEVL SEN/CIRC (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)
  • Combination meter
  • Fuel level sensor
P0463 FUEL LEVL SEN/CIRC (Fuel level sensor circuit high input) An excessively high voltage from the sensor is sent to ECM.