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.Google+
Car Problem Reports
Kia Spectra Oxygen Sensor Code Due to Failed Electrical Connections at Sensor
Kia Spectra Problem
Average Mileage: 102,073 mi (15,000 mi - 175,000 mi)
Visitor, 2003 Kia Spectra, 80,100 mi
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
Visitor, 2005 Kia Spectra, 55,000 mi
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.
Visitor, 2006 Kia Spectra, 75,000 mi
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.
Visitor, 2007 Kia Spectra, 71,000 mi
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
Visitor, 2005 Kia Spectra, 153,000 mi
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.
Visitor, 2005 Kia Spectra, 88,000 mi
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.
Visitor, 2002 Kia Spectra, 175,000 mi
Also Ob2 code P0128, P14014
Visitor, 2006 Kia Spectra, 15,000 mi
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.