DTC P12D4-1D: Fuel Pump Control Circuit Current Out of Range [10/2022 - ]: Description

WARNING: This page is about a different car, the 2025 Lexus RX 350, 2024 Lexus RX 350, and 2023 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

Refer to DTC P0627-12.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	DTC Output from	Priority	Note
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 (2 trip detection logic: except Mexico Models, 1 trip detection logic: for Mexico Models).	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	Except Mexico Models: Comes on For Mexico Models: Does not come on	Engine	A	SAE Code: P12D4 DTC for Mexico Models: Applies

RELATED DATA LIST

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