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 MANUALSKIA2010RONDO LX, 2.7 6REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROL SYSTEM DIAGNOSIS (1 OF 3) - 2.7LDTC P0140: HO2S CIRCUIT NO ACTIVITY DETECTED (BANK 1 SENSOR 2)INSPECTION/REPAIRW/HARNESS INSPECTIONSIGNAL CIRCUIT INSPECTION
2010 Kia Rondo LX, 2.7 6
Signal Circuit Inspection
2010 Kia Rondo LX, 2.7 6SECTION Signal Circuit Inspection
- IG "OFF" and disconnect HO2S (B1/S2) connector.
- IG "ON" and ENG "OFF"
- Measure voltage between terminal 1 of HO2S (B1/S2) harness connector and chassis ground.
- Specification:
Approx. 3.5V - when pumping current is ON
Approx. 0.45V - when pumping current is OFF
- Specification:
- Is the measured voltage within specification?
YES
- Go to "GROUND CIRCUIT INSPECTION " procedure.
NO
- Repair open in harness, then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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.