WARNING: This page is about a different car, the 2012 Subaru Outback and 2012 Subaru Legacy. However, it is still accessible from the selected car via links, so may be relevant.
Refer to "CO" information for radiator inspection. Refer to RADIATOR
CO(H4SO)-21, INSPECTION, Radiator. Refer to RADIATOR
CO(H4DOTC)-23, INSPECTION, Radiator. Refer to RADIATOR
CO(H6DO)-19, INSPECTION, Radiator.