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Home >> Lexus >> 2021 >> RC F Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (5 Of 9) >> SFI System >> DTC P0462: Fuel Level Sensor "A" Circuit Low; DTC P0463: Fuel Level Sensor "A" Circuit High [03/2019 - ] >> Description

DTC P0462: Fuel Level Sensor "A" Circuit Low; DTC P0463: Fuel Level Sensor "A" Circuit High [03/2019 - ]: Description

The fuel sender gauges are located inside the fuel tank and measure the amount of fuel. The fuel sender gauges convert the fuel level in the fuel tank into a output value and output it to the combination meter assembly. The ECM determines when it is necessary to refuel the vehicle based on changes in the output value of the fuel sender gauges.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0462 Fuel Level Sensor "A" Circuit Low Fuel sender gauge assembly or No. 2 fuel sender gauge assembly output resistance is higher than 480 Ω for 30 seconds or more (2 trip detection logic).
  • Open or short in fuel sender gauge or No. 2 fuel sender gauge circuit
  • Fuel sender gauge assembly
  • No. 2 fuel sender gauge assembly
  • Combination meter assembly
  • Fuel suction plate sub-assembly
  • Fuel tank vent tube assembly
  • ECM
Comes on DTC stored
P0463 Fuel Level Sensor "A" Circuit High Fuel sender gauge assembly or No. 2 fuel sender gauge assembly output resistance is less than 7 Ω for 30 seconds or more (1 trip detection logic).
  • Open or short in fuel sender gauge or No. 2 fuel sender gauge circuit
  • Fuel sender gauge assembly
  • No. 2 fuel sender gauge assembly
  • Combination meter assembly
  • Fuel suction plate sub-assembly
  • Fuel tank vent tube assembly
  • ECM
Comes on DTC stored