U0238 on Lincoln vehicles
U0238 is named on 7 Lincoln model years (2024–2026): 23 manufacturer filings and 0 owner reports in NHTSA’s files, across Navigator, Aviator, Nautilus.
Which Lincoln model years name U0238
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2026 Lincoln Navigator | Not specified | 4 | — |
| 2025 Lincoln Navigator | Electrical System | 4 | — |
| 2026 Lincoln Aviator | Electrical System | 3 | — |
| 2026 Lincoln Nautilus | Not specified | 3 | — |
| 2025 Lincoln Aviator | Not specified | 3 | — |
| 2025 Lincoln Nautilus | Electrical System | 3 | — |
| 2024 Lincoln Nautilus | Electrical System | 3 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
Lincoln filings that name U0238
Source: NHTSA manufacturer communicationsBulletins and campaigns Lincoln filed with NHTSA whose summary names U0238. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- SSM 54751 Service bulletin2026-04-17 · Unknown Or Other
- 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 N
- SSM 54810 Service bulletin2026-05-08 · Electrical System
- 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, rem
- SSM 54878 Service bulletin2026-05-27 · Electrical System
- 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, rem
- SSM 54752 Service bulletin2026-04-17 · Unknown Or Other
- Some 2025-2026 Aviator vehicles equipped with 28 radio speakers (minor feature code IDBBN) may exhibit a no audio/sound condition with no communication with the audio digital signal processing (DSP) module 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). Ins
What U0238 means
Source: SAE J2012 / OBD-IIU0238 sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. The record above is what Lincoln and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs U0238 a known problem on Lincoln vehicles?
It is a documented one: NHTSA's files hold 23 manufacturer filings and 0 owner reports naming U0238 on 7 Lincoln model years (2024–2026). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Lincoln models does U0238 appear on most?
2026 Navigator (4 documents), 2025 Navigator (4 documents), 2026 Aviator (3 documents).
Does U0238 on a Lincoln mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.