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

where would the dpfe sensor be located?

Asked by for the 2006 Chevrolet Malibu
1 answer
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.