U0238 · 厂商技术资料

LINCOLN · 2026-05-04

Some 2025-2026 Navigator vehicles may exhibit a no audio/sound condition with no communication with the audio digital signal processing (DSP) module and diagnostic trouble code (DTC) U0238 stored in the audio control module (ACM). This may be due to a concern with the DSP module. To determine if the DSP module is the root cause, remove the DSP module fuse from the battery junction box (battery junction box ÝBJB ̈ fuse F5). Inspect the fuse for an open and ensure the fuse has proper blade contact. After one minute, reinstall the good fuse. If the concern is still present or a fuse concern is found, continue with normal diagnostics in Workshop Manual (WSM), Section 415-00 > Information and Entertainment System > General Information > Diagnosis and Testing. If communication has been…

LINCOLN · 2026-04-17

Some 2024-2026 Nautilus non-hybrid vehicles equipped with 28 radio speakers (minor feature code IDBBN) and 2025-2026 Navigator vehicles may exhibit a no audio/sound condition with no communication with the audio digital signal processing (DSP) module and diagnostic trouble code (DTC) U0238 stored in the audio control module (ACM). Remove the DSP fuse from the battery junction box (BCMC) F138 for Nautilus, (BJB) F5 for Navigator. Inspect the fuse for an open and ensure the fuse has proper blade contact. After one minute, reinstall the good fuse. If the concern is still present or a fuse concern is found, continue with normal diagnostics in Workshop Manual (WSM), Section 415-00 Information and Entertainment System > General Information > Diagnosis and Testing. If communication has been…

FORD · 2024-09-30

Some 2023-2024 Escape vehicles built on or before 21-Mar-2024 and equipped with a B&O audio system may exhibit an intermittent no audio condition with diagnostic trouble code (DTC) U0238 stored in the audio control module (ACM) and/or in the accessory protocol interface module (APIM).

FORD · 2023-07-07

Some 2020-2021 Escape built on/before 23-Nov-2021, 2021 F-150 built on/before 08-Oct-2021, 2021 Mustang Mach-E built on/before 29-Mar-2021, 2021 Expedition built on/before 05-Aug-2021, 2021 Explorer built on/before 27-Sep-2021 and 2020-2022 Edge may exhibit a concern of the audio system does not power on, no sound from audio speakers, chimes default to coming through the instrument cluster, no communication with audio control module (ACM) or digital signal processor (DSP) module, and/or diagnostic trouble code (DTC) U0184, U0237 and/or U0238. To correct the condition, perform a hard reset of the DSP by disconnecting the 12-volt battery. Reprogram the DSP module using the latest version of the appropriate Ford diagnostic scan tool. For claiming, use causal part 18B849 and any applicable…

FORD · 2022-05-03

Some 2020-2021 Escape vehicles and 2021 F-150/Mustang Mach-E/Expedition/Explorer vehicles built on or before 22-Nov-2021 may exhibit a concern of the audio inoperative, no sound from audio speakers, chimes default to coming through the Instrument cluster, no communication with audio control module (ACM) or digital signal processor (DSP) module, and/or DTC U1084, U0237 and/or U0238. This may be due to the software in the DSP. To correct this condition, perform a hard reset of the DSP by disconnecting the 12-volt battery. Reprogram the DSP module using the latest version of the appropriate Ford diagnostic scan tool. For claiming, use causal part 18B849 and any applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.

FORD · 2021-04-16

Some 2021 Mustang Mach-E vehicles built on or before 29-Mar-2021 may exhibit a concern of the audio inoperative, no sound from audio speakers, chimes default to coming through the Instrument cluster, no communication with audio control module (ACM) or digital signal processor (DSP) module, and/or DTC U1084, U0237 and/or U0238. This may be due to the software in the DSP. To correct this condition, perform a hard reset of the DSP by disconnecting the 12-volt battery. Access the battery through the front luggage compartment by removing the left trim panel. Reprogram the DSP module using the latest version of the appropriate Ford diagnostic scan tool. For claiming, use causal part 18B849 and any applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.