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November 20, 2017 Service bulletin

Warning message, "FC malfunction, return vehicle to dealer for service."

Toyota technical service bulletin T-SB-0318-17 for 2016-2017 Toyota Mirai.

Bulletin number
T-SB-0318-17
Component
Fuel system, gasoline: fuel injection system
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.

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