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Home >> Ford >> 2021 >> Explorer ST >> Repair and Diagnosis >> External Pages >> Different car >> Section 494 (EPAS Guided Routine) >> Pinpoint Tests >> Pinpoint Tests BT: PSCM DTC U0253 Lost Communication With Accessory Protocol Interface Module >> DTC Trigger
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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.

This DTC sets when the PSCM does not receive the APIM messages within a certain time frame. This can occur if the APIM wiring harness or electrical connectors are loose or damaged, or if the vehicle battery state of charge levels are low. Consult the DTC Index for additional information if needed.

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