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Discussion Starter · #1 ·
One thing after another, just cleared up the 306 code and no getting 2 codes but my scanner only reads one, p0401.

I looked up threads and this seems to be the problem:
0401 - EGR insufficient flow (PCM commanding EGR operation and MAP not see change in manifold pressure and OX not see change in exhaust content).

I just had the plugs & wires replaced (2003 3.5L), I would imagine they would have replaced any cracked hoses. Should I just replace the EGR?
milage is 153K.
 
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