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Home >> Lincoln >> 2012 >> MKS Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Steering System - Electronic Power Assist Steering >> Interactive Diagnostics >> DTC Symptom Selection >> DTC Index >> DTC U0121: Lost Communication with the Anti-lock Brake System (ABS) Control Module >> Diagnostic Aids

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.

The presence of DTC U0121:00 will prevent the active park assist system (if equipped) from activating. If set during an active park assist event, the event will be terminated and the active park assist system will deactivate.

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