Thread: QX4 failed emission inspection
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Old 09-12-2004, 01:15 PM   #2
eds1300
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Re: QX4 failed emission inspection
http://www.iequus.com/obd_def.asp

I had P0420 and P0430 on my 2001 QX4. First, one of local mom-and-pop car shop wanted to replace all my catalytic convertors, but my dealer upgraded the ECU software.
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