Hi, this is Bo, an auto expert on RepairPal's Car Genius team!
If there’s no power to the OBD port and your Pacifica won’t start, it could mean a blown fuse that powers the port and possibly other critical systems, like the ignition circuit. Check for any blown fuses under the dash and in the engine compartment fuse box, particularly anything labeled for "OBD," "ECM," or "cigarette lighter" (since some OBD ports share a fuse with accessory outlets). Fixing that should bring power back to your OBD and help with diagnostics.
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