Vehicle applicability: This diagnostic supplement covers multiple Ford vehicles and engines. Follow the application named in the source below. Some references apply to vehicles other than Mustang.
4-144 Powertrain DTC Charts and Descriptions
Diagnostic Trouble Code (DTC) Charts and Descriptions
U016C - Lost Communication With Fuel Pump Control Module B (Continued)
All GO to Pinpoint Test KC.
U0212 - Lost Communication With Steering Column Control Module
Description: The PCM continuously monitors the controller area network (CAN) for messages from the steering angle
sensor. This DTC sets when the PCM does not receive the steering angle sensor message within the defined amount of time.
Possible Causes: • Communication error
Diagnostic Aids: Check for other PCM DTCs or PCM related symptoms. Diagnose all other PCM DTCs or PCM related
symptoms first.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test QA.
U028x -
Description:
Possible Causes:
Diagnostic Aids: Refer to the Workshop Manual Section 303-14, Electronic Engine Controls, PCM DTC Chart, to continue
diagnosis.
Application Key On Engine Off Key On Engine Running Continuous Memory
All Refer to the Description, Possible Causes and Diagnostic Aids for the DTC.
U0298 - Lost Communication With DC To DC Converter Control Module A
Description: The PCM continuously monitors the controller area network (CAN) for messages from the DC to DC convertor
control module. This DTC sets when the PCM does not receive the DC to DC convertor control module message within the defined amount of time.
Possible Causes: • Communication error
Diagnostic Aids: Check for other PCM DTCs or PCM related symptoms. Diagnose all other PCM DTCs or PCM related
symptoms first.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test QA.
U0300 - Internal Control Module Software Incompatibility
Description: The electronic throttle control (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. This DTC sets when there are incompatible software levels within the PCM that control the ETC system.
Possible Causes:
Diagnostic Aids: Verify the PCM is at the latest calibration level.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test QE.
U0402 - Invalid Data Received From TCM
Description: Network DTC concerns occur during module to module communication.
Possible Causes: • Invalid data network concerns - data is transferred within the normal inter-module message, but contains
known invalid data. The transmitting module logs a DTC related to the invalid data concern.
• Missing message network concerns - missing message concerns are logged by the module upon failure to
receive a message from another module within a defined retry period.
2016 Powertrain Control/Emissions Diagnosis, Gasoline Engines, 3/2015
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.