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 Ford Fusion Hybrid
Average mileage: 58,470 (41,000–91,000)
1 model year affected: 2010
7 people reported this problem
2010 Ford Fusion Hybrid 60,500 mi, Visitor
"Service engine soon" light came on just prior to a routine oil/filter change...tech hooked up to the OBD-II, reported the code...quick lookup on the internet suggested this was likely a common issue, no other problems were evident, so I simply had the tech reset the computer. Will note the interval if it comes on again.
2010 Ford Fusion Hybrid 53,121 mi, Visitor
Failed emission testing with a code of p0400.
2010 Ford Fusion Hybrid 42,000 mi, Visitor
I took the car to Pep Boys for a free check engine scan and they reported the problem as PO400. After the scan the light turned off on its own.