Yes, that is a very, very likely possibility.
ERROR message on the odometer is due to failure in CAN BUS data communication, either faulty powertrain control module, or fault instrument cluster panel, depending upon the stored fault code. IF the dealer scanned the system, then there is no reason to believe that it is not the instrument cluster and instead the powertrain control module. If they did not scan it, then this needs to be done to determine which of the two is responsible
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