Affected Component: FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM

Date Published
NOV 20, 2017
NHTSA TSB #
10133646
TSB Document
Summary
TSB: Some 2016 ? 2017 model year Mirai vehicles may exhibit a warning message, "FC malfunction, return vehicle to dealer for service." This message is accompanied by Diagnostic Trouble Code (DTC) P1DEF (450 FC Stack Performance). The Fuel Control Module (FCM) calibration has been revised to address this condition.