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Service bulletins for the 2025 Ford Mustang

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

57 on file from NHTSA, as of 2026-10-19.

About U0420 on the 2025 Ford Mustang: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: U0420 are shown. Show all

Bulletins, newest first
SSM 542062025-09-18. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. Some 2025 Mustang GTD vehicles may set diagnostic trouble code (DTC) U0420:82 in the image processing module a (IPMA) during a diagnostic self-test. This may be due to the module's DTC sensitivity during vehicle key-on/start-up. Replacement or reprogramming of the IPMA module may not resolve this condition. If no other DTCs are present, no warning indicators are illuminated while the engine is running, and no noticeable symptoms are present, no additional diagnostics or service is recommended for this condition at this time. Inform customers engineering is currently working on a solution for this condition that is expected in Q2 2026. Monitor Professional Technician System (PTS) for additional information and schedule service appointments for customers once the repair becomes available. If this condition is encountered, use the "Submit Global Concern Report (GCR)" link at the upper right of the Vehicle ID tab to submit a report and reference this article number in the report.
SSM 539912025-07-02. Service bulletin. UNKNOWN OR OTHER; ENGINE. Some 2025 Mustang GTD vehicles may set diagnostic trouble code (DTC) U0420:82 in the image processing module a (IPMA) during a diagnostic self-test. This may be due to the module's DTC sensitivity during vehicle key-on/start-up. Replacement or reprogramming of the IPMA module may not resolve this condition. If no other DTCs are present, no warning indicators are illuminated while the engine is running, and no noticeable symptoms are present, no additional diagnostics or service is recommended for this condition at this time. Inform customers engineering is currently working on a solution for this condition that is expected in Q4 2025. Monitor Professional Technician System (PTS) for additional information and schedule service appointments for customers once the repair becomes available. If this condition is encountered, use the "Submit Global Concern Report (GCR)" link at the upper right of the Vehicle ID tab to submit a report and reference this article number in the report.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.