LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 2021 >> Edge SE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 494 (EPAS Guided Routine) >> Pinpoint Tests >> Pinpoint Tests CD: PSCM DTC U0554 Invalid Data Received From The Accessory Protocol Interface Module (APIM) >> DTC Trigger
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC Trigger

WARNING: This page is about a different car, the 2020 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

The DTC sets when the PSCM receives invalid data from the APIM. The data is likely invalid due to APIM internal errors, damaged or inoperative sensors or components the APIM uses to gather vehicle data. The invalid data DTC is not set due to the PSCM, PSCM wiring or connectors. Consult the DTC index for additional information if needed.