2006 Chevrolet Malibu Q&A

2006 Chevrolet Malibu Question: after i have changed the o2 sensors, a code pops up p0402,

where would the dpfe sensor be located? -
Answer 1
I cannot find any info for code P0402, are you sure you do not have a code P0420? Code P0420 would indicate a failed catalytic convertor. -