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Q: How many o2 sensors on my car and where? on 2003 Kia Sorento

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
My dealer wanted $370 for o2 sensor replacement - said sensor part was $250. Looks like a DIY.

I looked for part[s] and I find a 15cm 4 wire for about $30. I also find 3 [?] different ones [lower left, upper right, lower right] priced at $68 each.

Is this a DIY job or not?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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You need to find out the code stored in your cars computer when the check engine light came on. A code can be set for either the heater circuit or performance for any of the Oxygen sensors. The car has multiple Oxygen sensors one for each bank of cylinders and rear oxygen sensor is used to monitor catalytic convector efficiency. It is important to know the code to decipher which sensor is bad. Some sensors are easier than others to replace ,but generally can be done by anyone with mechanical ability. Lisle make a cheap O2 sensor removal tool available at most good parts store. I would suggest using a sensor that has original type electrical connection.
go to advanced auto and get the universal for 67.99. i just did this . the dealer said 280.00 bunch of bs. you'll need to follow th instructions but it's fairly easy. (diy)
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