U0539Invalid Data Received From Digital Audio Control Module D
- Generic OBD-II code · Network
- How the car detects it
- Ford assigns the D slot fairly clearly: on 2024–2026 Nautilus, 2025–2026 Aviator with the 28-speaker system and 2025–2026 Navigator, the audio control module stores U0238 when it cannot reach the digital signal processor (SSM 54751, 54752). The first check there is pulling the DSP fuse for one minute; only when contact returns are a fuse fault or a new DSP the answer, and on Nautilus and Navigator a software fix was still pending. U0539 is the step before total loss: the DSP's frames do reach the ACM, yet its status, volume or equalizer content fails the plausibility checks. Ford publishes no case for U0539 itself. Typical results are silence or missing channels while the radio display keeps working; the vehicle drives normally.
- What you may notice
- No audio from the speakers although the radio display works
- Sound drops out intermittently or some channels are missing
- Likely causes
- PossibleDigital signal processor module faulty
- PossiblePoor blade contact at the DSP fuse or supply interruption
- PossibleDSP or audio control module software fault
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.