Pinpoint Test H: DTC C1920 - Status LED No. 1 Circuit Failure and DTC B2373 - LED No. 1 Circuit Short to Battery: Notes
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Refer to appropriate WIRING DIAGRAM ARTICLE, Parking Aid for schematic and connector information.