U0238 on the 2025 Lincoln Nautilus
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| SSM 54878 | 2026-06-03. Service bulletin. Some 2024-2026 Nautilus non-hybrid and 2025-2026 Aviator 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 module (DSP) with U0238 stored in the audio control module (ACM). This may be due to the DSP. To determine if the DSP is the root cause, remove the DSP fuse from the battery junction box (BCMC fuse F40 for Aviator, BCMC fuse F138 for Nautilus, BJB fuse F5 for Navigator). Inspect the fuse for an open and make sure 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, refer to Workshop Manual (WSM), Section 415-00 for normal diagnostics. If communication has been re-established with the DSP, install a new DSP ordered from Ford Component Sales using the On-Line 1878 form to correct this condition. Refer to Workshop Manual (WSM), Section 415-00. For claiming, use causal part 18B849 and labor operations 12651D and 12651D13. |
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| SSM 54810 | 2026-05-14. Service bulletin. Some 2024-2026 Nautilus non-hybrid and 2025-2026 Aviator 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 module (DSP) with U0238 stored in the audio control module (ACM). This may be due to the DSP. To determine if the DSP is the root cause, remove the DSP fuse from the battery junction box (BCMB fuse F40 for Aviator, BCMB fuse F138 for Nautilus, BJB fuse F5 for Navigator). Inspect the fuse for an open and make sure 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, refer to Workshop Manual (WSM), Section 415-00 for normal diagnostics. If communication has been re-established with the DSP, install a new DSP ordered from Ford Component Sales using the On-Line 1878 form to correct this condition. Refer to Workshop Manual (WSM), Section 415-00. For claiming, use causal part 18B849 and labor operations 12651D and 12651D13. |
| SSM 54751 | 2026-04-21. Service bulletin. 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 re-established with the DSP module, engineering is currently working on a solution for this condition that is expected by Q2 2026. Replacement or reprogramming of the DSP will not resolve this condition. Monitor Professional Technician System (PTS) for additional information and schedule service appointments for customers |
3 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.