Check Engine Light On, Engine Runs OK on Kia Spectra

The Check Engine Light may erroneously illuminate, signifying a fault with the front oxygen sensor when no fault exists. Replacing the electrical connections at the oxygen sensor with a repair kit available from Kia will commonly fix this problem.

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Average mileage: 107,291 (15,000–187,251)
6 model years affected: 2002, 2003, 2004, 2005, more2006, 2007
34 people reported this problem
19 people shared problem details
2003 Kia Spectra80,100
2003 Kia Rio....has now had the front O2 Sensor changed 4 times (Bosch brand versus manufacturer original part) and the back O2 Sensor once. It checks out fine then within days, always while driving on the highway, it indicates again. it is NOT fixed and I need advice
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2005 Kia Spectra55,000
I bought this used at 55,000. Check engine light goes on and off. Sometimes days with no light. Other days it stays on maybe for a day.
2006 Kia Spectra75,000
I paid to have it turned off and it came back on the next day.
Dealer replaced electric connections twice prior to warranty experation. Light comes back on every 5 to 7500 miles. It's on at 74000 and I may have to change the oxygen sensor.
2007 Kia Spectra187,251
Check engine light came on for upper O2 Senor.
2005 Kia Spectra90,000
Check engine light used to come on and go off. The first time it came on I took it to my mechanic and they said that it was O2 sensors which I knew had recently been replaced by the previous owners of the car. I know that this is caused by an electrical connection and not in fact the O2 sensors. Need to have that fixed, which I understand is very low cost. I just need to know what the exact part is.
2004 Kia Spectra140,000
Our check engine light is on, we replaced both o2 sensors and also the catalytic converter and now the check engine light is on again throwing the code that the upstream o2 sensor is bad. and they were both just replaced 2 years ago!!!!
I can drive about 30 minutes and shut off the car. When it is restarted after sitting a few minutes or more, the check engine light will come on. The code reader says O2 sensor heater circuit, bank 1 sensor 1.
check engine light on and off will not pass smog because of this problem
My check engine light goes on and off all of the time. It as well was tested to be the Oxygen Sensor. I've had the issue before and Kia replace some emissions valve in the gas tank stating I had over fueled my vehicle and flooded it. Unfortunately for them, I have never over fueled my car in my 10 years as the only owner of the vehicle. I'm rely surprised this car has only had 2 recalls with all of the issues I have had with it.
2007 Kia Spectra71,000
Check engine light came on, KIA dealership said it was my O2 sensor, I had them replace it, within 3 days it was on again, they tried another one and it is still on
2005 Kia Spectra153,000
Replaced downstream o2 sensor based on engine diagnostics. Engine light resumed with same out of range code indicating connector/wiring harness failure. Will have to secure repair kit from Kia or get a connector from alternate source and splice wires.
2005 Kia Spectra88,000
O2 sensor error comes up on diagnostic computer.. Ive heard that it is probably not an O2 problem but the wire connection is bad at the sendor
Check engine light comes on randomly. Various codes none verfied. No solution yet.
2002 Kia Spectra175,000
Also Ob2 code P0128, P14014
2006 Kia Spectra15,000
Same here. CHeck engine light has been on nearly 100,000 miles. Take it to dealer, they say "the gas cap was loose" or "it's a fault" or "we reset it"... it comes back the next time the car starts. I got tired of taking it to the dealer for a "reset" only to have it come on again within a day. I have noticed that if I let the back hatch be only partly closed, start up the car and get a 'door ajar' light on the panel, I won't get the check engine light until the next start up. Now, though, I am stuck. California won't pass smog test if the light is on, regardless of whether there's any real fault or not.
2006 Kia Spectra150,000
Car was running strange took it into shop, they tested the o2 sensor and it came back fine but the codes where saying a failed o2 sensor
Check engine light turns on and off. Each time it's been taken in to indicate what is wrong with the car, it indicates a different issue each time, but it has been wrong each time. In addition, I have major electrical issues: the windows work/don't work intermittently, the battery went bead and caused my car buzz and lights to flash. After that occurred, the left turn signal lever will no longer go down to turn on the left blinker. I've had to replace light bulbs frequently because they continuously burn out. I had asked a Kia Dealer in the Ontario Auto Center to do electrical repairs while it was still under warranty, but they refused stating they only do oil changes on the weekends and they refused to provide me with a vehicle so I could get to work if I brought it in during the week.
2005 Kia Spectra89,070
Intermittant eng. check light for about a month. Dealer diagnosed it as the O2 connector and replaced it ($235!!!)
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