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Old 02-24-2009, 02:39 AM   #1
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Exclamation code P0402, no driveability probs?

my 6.0 powerstroke has code P0402 and a weird odor coming from exhaust, but no sluggish behavior,surge, or loss of power associated with the code. a mechanic said it may just be the back pressure sensor but he didnt smell the odor. before i spend a bunch of money, anyone have some insight as to what this could be?


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Old 02-24-2009, 02:43 AM   #2
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kinda sounds like your egr valve is shot try pulling it out and cleaning it
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Old 02-24-2009, 04:35 AM   #3
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