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Diagnostic Aids

DTC U0252:00 indicates a possible failure of the HS-CAN which can be due to a circuit fault in the HS-CAN, the PSCM wiring harness or a RLCM-B concern. Do not install a new PSCM as part of the repair for a PSCM DTC U0252:00.

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 system is deactivated.

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