Diagnostic Aids
WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.
DTC U0422:00 indicates a concern with the BCM or vehicle communications network. The module reporting this DTC is not the problem module. Do not install a new PSCM as part of the repair for DTC U0422:00.
When this DTC sets, the trailer back up assist system may be disabled.