Check Engine Light With Code P0400 on Mercury Milan
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.
1 person reported this problem
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Mercury Milan vehicles with this problem
1 model year affected
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