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I pulled DTCs PO478 and PO 470. Exhaust back pressure codes. Is there an easy fi

(2002 Ford F-250 Super Duty)
in Weimar, CA on November 29, 2012
DTC PO 478 and 470 back pressure codes. Is there an easy fix? Have a smog ck tomorrow
Displaying 2 answers & 2 comments
Popular Answer
of Greg's Orange Auto on November 29, 2012
could be egr valve or dpfe valve if applicable
on November 29, 2012
Oh, It's a 7.3 diesel
on November 29, 2012
possible EGR passages are clogged.
on November 29, 2012
I didn't mention it's a 7.3 Diesel
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