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Fiesta ST
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Repair and Diagnosis
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Steering
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Power Steering System
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Interactive Diagnostics
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DTC Symptom Selection
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DTC Index
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DTC U0401: Invalid Data Received from ECM/PCM A
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Possible Causes
Possible Causes
DTC are present in the PCM.
DTCs present in the ABS module.
PCM HS-CAN bus concern.