what excatly are codes PO715 & PO130? how can i take care of this on a tight budget?

2005 KIA OPTIMA
11,600 MILES
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CHOOPER
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my check engiene light is on and i took it to auto zone and it gave us these two codes: PO715 & PO130. i need to get this taken care of in the fastest amount of time possible. however, i am a single ****** with 2 children and i am on a very tight budget. any help or advice that you can give me would be much appricated. i do not want to be taken advantage of so if you know of any expert mechanics that would be willing to help me honestly please let me know. i live in the deer park, tx and pasadena, tx area.
Jan 28, 2012 at 6:39 PM
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KHLOW2008
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Refer to chart for description of trouble codes.

Would you be able to perform diagnostics?

Which engine do you have?

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Jan 28, 2012 at 9:15 PM
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CHOOPER
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Its a v6. We did the diagnostics at auto zone. We also checked all the fuses and unhooked the battery for about an hour. I am holding this is something I can get taken care of at auto shop as opposed to taking it to the dealership. Any other suggestions? Thanks!
Jan 29, 2012 at 1:56 AM
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KHLOW2008
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Sorry for not being clear on the diagnostics. By that I mean would you be able to perform tests with some basic equipment/tools.

Unhooking the battery would only reset the codes and if the problem is there, it would come back.

If information is available, any competent auto shop should be able to help you on the diagnostics tests.

For P0130, most probably you need a new O2 sensor.
For P0715, it could be a loose or contaminated connector or a broken wire of the circuit.

Check the basics first. Unplug the wire harness connectors to check for contaminations and clean if necessary.
Jan 29, 2012 at 9:21 AM
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CHOOPER
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Ok so I don't know very much about cars n the repair manual is not out yet for me to buy. How exactly would I check those wires n how much of a pain in the butt would it b to change out the upstream o2 sensor.
Feb 3, 2012 at 11:48 PM
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KHLOW2008
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Refer to diagram for HO2S location. Replacement is not too difficult but try to remove the sensor when it is not too hot nor too cold to avoid seizure of the threads.

Unplug th einput sensor and check the connector for contaminations. You can measure the sensor resistance.
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Feb 4, 2012 at 12:27 PM