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Home >> Lincoln >> 2018 >> Navigator Select, RWD >> Repair and Diagnosis >> Steering >> Electronic Steering >> EPAS Guided Routine Testing >> DTC/Symptom Selection >> DTC Index >> DTC U0554: Invalid Data Received from Accessory Protocol Interface Module >> Diagnostic Aids
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Diagnostic Aids

DTC U0554:00 indicates a trailer back up assist message concern. The module reporting this DTC is not the problem module. Do not install a new PSCM as part of the repair for PSCM DTC U0554:00.

The presence of this DTC prevents the trailer back up assist system (if equipped) from activating. If set during a trailer back up assist event, the event is terminated and the trailer back up assist system is deactivated.

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