oxygen sensor - hard to replace?
How hard is it to replace oxygen sensor on Optima 2001? My check engine light came on yesterday, I dropped the car off at Kia dealership and just got a call that one of the sensors (don't know which one yet) is faulty and that it'll cost me $200 (parts/labor) to replace it. I googled around and found several types of sensors for my make/model ranging from $20 (universal sensors) to $70 (specific ones - front/rear). I don't know where this sensor is located, can't look under the hood now (car is in the shop), so... can anybody advice is this is something relatively easy to do on your own or should I let them do it? Thanks in advance
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