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My service engine light is on and I had autozone pull codes on my 2005 Infiniti qx 56, codes po420 and po430 showed up. What are the solutions to fixing the problem?
Vehicle: 2005 Infiniti qx 56, v-8 engine 5.6L

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Unfortunately the only solution is to replace the catalytic converter on both sides. The catalytic converter are part of the exhaust manifold.

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