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Home >> Ford >> 2013 >> Mustang GT, 2D Convertible, Automatic Trans >> Repair and Diagnosis (Single Page) >> Steering >> Manual Steering >> Steering System (Inspection & Testing) >> DTC Symptom Selection >> DTC Index >> DTC U0121: Lost Communication with the Anti-lock Brake System (ABS) Control Module >> Diagnostic Aids
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Diagnostic Aids

DTC U0121:00 indicates that the ABS module cannot communicate over the HS-CAN bus. This could be due to a DTC being set in the ABS or a circuit fault in the HS-CAN bus. Do not install a new PSCM as part of the repair for a PSCM DTC U0121:00.

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