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.

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HOMESERVICE MANUALSKIA2017RIO EX, 4D HATCHBACKREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 3)DTC P0136: O2 SENSOR CIRCUIT (BANK 1/SENSOR 2)W/HARNESS INSPECTIONGROUND CIRCUIT INSPECTION

2017 Kia Rio EX, 4D Hatchback

Ground Circuit Inspection

2017 Kia Rio EX, 4D HatchbackSECTION Ground Circuit Inspection

■ Check Open in Ground Circuit

IG KEY "OFF".
Disconnect HO2S (S2) connector.
Measure resistance between ground terminal of HO2S (S2) and chassis ground.
Specification: Below 1Ω

Fig 1: Measuring Resistance Between Ground Terminal Of HO2S (S2) And Chassis Ground
Courtesy of KIA MOTORS AMERICA, INC.

RENDER: 1.0x

NO RELATED

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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.