Check Engine Light With Code P0400: Mercury Milan Muffler & Exhaust

Problem overview

The Check Engine Light may illuminate with code P0400 stored for an exhaust gas recirculation (EGR) fault. Our technicians tell us if no EGR system faults are noted, updated powertrain control module (PCM) is available which should correct this issue.

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Mercury Milan vehicles with this problem

1 model year affected

2010 Mercury Milan

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Check Engine Light With Code P0400 on Mercury Milan

Problem overview

Mercury Milan vehicles with this problem

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