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Home >> Ford >> 2023 >> Expedition XL, 4WD >> Repair and Diagnosis >> Quick Lookups >> DTC Index >> DTC Index (ETHERNET Module Communications Network - Hydraulic Brake System Actuation) >> Exhaust System DTCS >> Catalyst System
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Catalyst System

DTC Description Action
P0420:00 Catalyst System Efficiency Below Threshold (Bank 1): No Sub Type Information GO to Pinpoint Test HF
P0430:00 Catalyst System Efficiency Below Threshold (Bank 2): No Sub Type Information GO to Pinpoint Test HF