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who cares I think that was pretty rude, who cares? Well obviously the person who posted the question. PO401 code means this:
The PCM has determined that there is insufficient flow in the exhaust gas recirculation system. Definition: EGR system fault ( Exhaust Gas Recirculation) Probable Causes: 1. Blocked passage on EGR system 2. Failed EGR Valve 3. EGR solenoid faulty 4. Failed EGR pressure sensor where applicable 5. Failed EGR position sensor where applicable
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