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1999 Ford Crown Victoria 4.6L with engine code P0420, which side on the car?

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1999 Ford Crown Victoria 4.6L with engine code P0420, which side on the car?

Vehicle: 1999 Ford Crown Victoria 4.6L

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This code is for a bad bank 1 converter. This is the passenger side converter between the 2 O2 sensors.
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P0420 Ford Code - Catalyst System Efficiency Below Threshold Bank 1
Read more: https://www.autocodes.com/p0420_ford.html

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2005 Ford Crown Victoria 4.6L with engine code P0402
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