Hyundai Ioniq: Engine Control System / Exhaust Gas Temperature Sensor (EGTS). Repair procedures

Hyundai Ioniq (AE) 2017-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Exhaust Gas Temperature Sensor (EGTS). Repair procedures

Inspection

1.	Turn ignition switch OFF.

2.	Disconnect the connector of exhaust gas temperature sensors #1/#2.

3.	Measure resistance between sensor signal terminal and ground terminal.

Check that the resistance is within the specification.

Exhaust Gas Temperature Sensor [EGTS #1, #2 (T3, T4)]

Temperature [°C (°F)]	Resistance (kΩ)
-40 (-40)	0.17
0 (-32)	0.201
100 (212)	0.276
200 (392)	0.35
300 (572)	0.42
400 (752)	0.489
500 (932)	0.555
600 (1112)	0.618
700 (1292)	0.68
800 (1472)	0.739
850 (1562)	0.767

Removal

[EGTS #1 (T3)]

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

2.	Lift the vehicle.

3.	Disconnect the EGTS #1 connector (A).

4.	Remove the EGTS #1 (B).

[EGTS #2 (T4)]

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

2.	Lift the vehicle.

3.	Disconnect the EGTS #2 connector (A).

4.	Remove the EGTS #2 (B).

Installation

•	Install the component to the specified torques.

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

1.	Install in the reverse order of removal.

Exhaust Gas Temperature Sensor (EGTS). Schematic diagrams

C..

Rail Pressure Sensor (RPS)

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: Schematic diagrams

T..

Hyundai Ioniq (AE) 2017-2025 Service Manual: Description and operation

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