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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 123 (Engine Control System (A25A-FXS) - Diagnostic Codes (P12D0-P1362)) >> SFI System >> DTC P12D4-19: Fuel Pump Control Circuit Current Above Threshold; DTC P12D4-1D: Fuel Pump Control Circuit Current Out of Range [11/2024 - ] >> Description

DTC P12D4-19: Fuel Pump Control Circuit Current Above Threshold; DTC P12D4-1D: Fuel Pump Control Circuit Current Out of Range [11/2024 - ]: Description

WARNING: This page is about a different variant/trim than selected.

Refer to DTC P025A-12.

Refer to DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P12D4-19 Fuel Pump Control Circuit Current Above Threshold When the fuel pump control ECU operation duty ratio is 3 to 65%, overcurrent in the fuel pump circuit is detected for 3 seconds or more (2 trip detection logic).
  • Short in fuel pump control ECU circuit
  • Fuel pump (for low pressure side)
  • Fuel pump (for low pressure side) locked
  • Foreign matter in the fuel
  • Fuel pump control ECU
Comes on DTC stored
  • SAE Code: P12D4
  • DTC for Mexico Models: Does not apply
P12D4-1D Fuel Pump Control Circuit Current Out of Range When the fuel pump control ECU operation duty ratio is 3 to 65%, overcurrent in the fuel pump circuit is detected for 3 seconds or more (1 trip detection logic).
  • Short in fuel pump control ECU circuit
  • Fuel pump (for low pressure side)
  • Fuel pump (for low pressure side) locked
  • Foreign matter in the fuel
  • Fuel pump control ECU
Does not come on DTC stored
  • SAE Code: P12D4
  • DTC for Mexico Models: Applies (Mexico models only)
RELATED DATA LIST

DTC No. Data List
P12D4-19
P12D4-1D
Fuel Pump Control Duty Ratio