Hyundai Ioniq: Engine Control System / Mass Air Flow Sensor (MAFS). Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Mass Air Flow Sensor (MAFS). Repair procedures

Inspection

Check the MAFS visually.

–	Mounting direction correct.

–	Any contamination, corrosion or damage on connector.

–	Air cleaner's clogging or wet.

–	MAFS cylinder's deforming or blocking by any foreign material.

2.	Check any leakage on intake system and intercooler system.

Removal

1.	Turn the ignition switch OFF and disconnect the battery (-) cable.

2.	Disconnect the mass air flow sensor connector (A) and the installation clamp (B).

3.	Remove the mass air flow sensor (C).

Installation

•	Install the component with the specified torques.

•	Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

•	Be careful not to damage the sensing element and the honey cell.

Install in the reverse order of removal.

Mass air flow sensor installation bolt :

2.9 - 4.9 N.m (0.3 - 0.5 kgf.m, 2.2 - 3.6 lb-ft)

Mass air flow sensor clamp installation bolt :

2.9 - 4.9 N.m (0.3 - 0.5 kgf.m, 2.2 - 3.6 lb-ft)

Mass Air Flow Sensor (MAFS). Schematic diagrams

C..

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