Diagnostic Aids
DTC U0159:00 indicates that the PAM cannot communicate over the HS-CAN bus, which could be due to a DTC being set in the module or a circuit fault in the HS-CAN bus. Do not install a new PSCM as part of the repair for a PSCM U0159:00.
When the PSCM sets this DTC power steering assist will be present, but active park assist will be disabled. Active park assist will not function until the cause of the DTC is repaired and the DTC is cleared. If the DTC is set during an active park assist event, the event is terminated and the active park assist system is deactivated.