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Home >> Lexus >> 2021 >> GX 460 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostic Codes) (4 Of 7) >> SFI System >> DTC P0462: Fuel Level Sensor "A" Circuit Low; DTC P0463: Fuel Level Sensor "A" Circuit High [08/2019 - ] >> Procedure

DTC P0462: Fuel Level Sensor "A" Circuit Low; DTC P0463: Fuel Level Sensor "A" Circuit High [08/2019 - ]: Procedure

  1. CHECK HARNESS AND CONNECTOR (FUEL SENDER GAUGE ASSEMBLY - COMBINATION METER ASSEMBLY) 
    1. Disconnect the fuel sender gauge assembly connector.
    2. Disconnect the combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      G3-26 (L) - S4-2 Always Below 1 Ω
      G3-2 (FE) - S4-3 Always Below 1 Ω
      G3-26 (L) or S4-2 - Body ground and other terminals Always 10 kΩ or higher
      G3-2 (FE) or S4-3 - Body ground and other terminals Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  2

  2. INSPECT FUEL SENDER GAUGE ASSEMBLY 
    1. Remove the fuel sender gauge assembly.

      Refer to REMOVAL [08/2015 - ]

    2. Inspect the fuel sender gauge assembly.

      Refer to INSPECTION [08/2015 - ]

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [08/2019 - ] 

    Result: 

    NG 

    REPLACE FUEL SENDER GAUGE ASSEMBLY. Refer to  REMOVAL [08/2015 - ]