Question about 2002 Kia Sportage

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I have a 2002 kia sportage with a 2.0 liter 4cylinder...I have had another in put in this vehicle with 60,000 miles...So my check engine light keeps coming on..I have checked it with a engine code reader and it came up that i needed to replace the uphill CO2 sensor..I replaced it the engine light went off...30 miles later it came back on...So can you please tell me what else may cause this...Thanks

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Check the wiring from the sensor to the PCM. Make sure there are no breaks, cracks etc that will cause the voltage to report incorrectly.

After replacing the sensor - it is mandatory to let it calibrate to the PCM.

Meaning it will take 5 cycles... engine to operating temp, and cool down for the PCM to calibrate.

Wait about 3-4 days for the calibration to take place, then erase the codes.

If they come back - please re-post and I'll be glad to continue troubleshooting.

Don't forget to write down the exact code you are getting. Some codes mean different things on different vehicles.

Thanks for using FixYa - please accept this answer to remove it from the work queue.


Posted on Sep 26, 2009

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