DTC P148F-00: Engine Coolant Pump Over Revolution [04/2020 - 09/2022]: Description

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

The ECM controls the engine water pump assembly by calculating the necessary amount of coolant flow based on engine coolant temperature, engine speed and vehicle speed information. The speed of the engine water pump assembly is controlled steplessly using a duty cycle signal sent from the ECM. This optimal control enhances warm-up performance and reduces cooling losses, thus reducing the specific fuel consumption of the engine.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P148F-00	Engine Coolant Pump Over Revolution	When both of the following conditions are met for 5 seconds or more (1 trip detection logic): Engine water pump assembly duty cycle is 85% or higher. Actual engine water pump assembly speed exceeds the target for a certain amount of time.	Lack of engine coolant Engine coolant leak Engine water pump assembly	Does not come on	DTC stored	SAE Code: P148F DTC for Mexico Models: Applies