U0300 2012 FORD FUSION - Internal Control Module Software Incompatibility
Tech notesVerify the Powertrain Control Module (PCM) is at the latest calibration level.
U0300 2012 Ford Fusion DescriptionThe U0300 code indicates there are incompatible software levels within the Powertrain Control Module (PCM) that control the Electronic Throttle Control (ETC) system. The ETC system uses multiple microprocessors within the PCM, each having its own software level and function. The microprocessors must have the correct level of software in order to communicate and function together.
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