Diagnostic Trouble Code (DTC) Chart

WARNING: This page is about a different car, the 2023 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

Diagnostics in this service information assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

Module	DTC	Description	Action
APIM	U2400:81	Ethernet Failure With Gateway Module A (GWM): Invalid Serial Data Received	GO to Pinpoint Test A
APIM	U2400:92	Ethernet Failure With Gateway Module A (GWM): Performance Or Incorrect Operation	GO to Pinpoint Test A
GWM	U2120:00	Ethernet Learning Incomplete: No Sub Type Information	GO to Pinpoint Test C
GWM	U2401:00	Ethernet Failure With Accessory Protocol Interface Module (APIM): No Sub Type Information	GO to Pinpoint Test B
GWM	U2401:81	Ethernet Failure With Accessory Protocol Interface Module (APIM): Invalid Serial Data Received	GO to Pinpoint Test A
GWM	U2401:92	Ethernet Failure With Accessory Protocol Interface Module (APIM): Performance Or Incorrect Operation	GO to Pinpoint Test A
GWM	U2402:00	Ethernet Failure With Telematic Control Unit Module (TCU): No Sub Type Information	GO to Pinpoint Test B
GWM	U2402:81	Ethernet Failure With Telematic Control Unit Module (TCU): Invalid Serial Data Received	GO to Pinpoint Test A
GWM	U2402:92	Ethernet Failure With Telematic Control Unit Module (TCU): Performance Or Incorrect Operation	GO to Pinpoint Test A
GWM	U2403:81	Ethernet Failure With Instrument Panel Cluster Control Module (IPC): Invalid Serial Data Received	GO to Pinpoint Test A
GWM	U2403:92	Ethernet Failure With Instrument Panel Cluster Control Module (IPC): Performance Or Incorrect Operation	GO to Pinpoint Test A
GWM	U2404:81	Ethernet Failure With Image Processing Module 'A' (IPMA): Invalid Serial Data Received	GO to Pinpoint Test A
GWM	U2404:92	Ethernet Failure With Image Processing Module 'A' (IPMA): Performance Or Incorrect Operation	GO to Pinpoint Test A