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.
Check Engine Light With Code P0400 on Mercury Milan Hybrid
Average mileage: (–)
1 model year affected: 2010
1 person reported this problem
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