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.
Component Inspection
2010 Kia Rondo LX, 2.7 6SECTION Component Inspection
- Replace the HO2S.
- Clear DTC with scantool.
- Start the engine and warm it up until the radiator fan comes on (more than 10 min.).
- Drive at a steady speed between 45-55 mph (72-88 km/h) for 30 seconds.
- Stop and then maintain idle state for 30 seconds in D-position.
- Check if O2 sensor monitoring readiness is complete.
- Does the scantool show DTC P0139?
YES
- Substitute with a known-good PCM and check for proper operation.
If the problem is corrected, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Troubleshooting is finished.CAUTION: There is a memory reset function on the scantool that can erase optional components automatically detected and memorized by the PCM. Before or after testing PCM on the vehicle, use this function to reuse the PCM.
- Substitute with a known-good PCM and check for proper operation.
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.