Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2023 Kia Telluride SX X-LineFACTORY OEM SERVICE PROCEDURE

Component Inspection

Disconnect the Heated Oxygen Sensor (HO2S) connector (A).
Bank1 Front Heated Oxygen Sensor

Courtesy of KIA MOTORS AMERICA, INC.

Bank1 Rear Heated Oxygen Sensor

Courtesy of KIA MOTORS AMERICA, INC.

Bank2 Front Heated Oxygen Sensor

Courtesy of KIA MOTORS AMERICA, INC.

Bank2 Rear Heated Oxygen Sensor

Courtesy of KIA MOTORS AMERICA, INC.

Measure resistance between the HO2S terminals.

Courtesy of KIA MOTORS AMERICA, INC.

Terminal	Function
2	Heater (+)
5	Heater (-)

Check that the resistance is within the specification.

Item	Specification
Heated oxygen sensor (Ω)	2.4 - 4.0 [23°C (73.4°F)]

Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.