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07 Fj Cruiser 4x4
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Discussion Starter #1
OK I had the code po420 I have brand new sensors and converters but light came on still so I use some anti foul o2 extenders and po420 went now I get a po606 cod I didn't change anything else either just installed to prevent po420 code what do I check??? i live in South Carolina and there are no emissions test here
 
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