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.
Sunday, January 29th, 2012 AT 9:21 AM