U0538Invalid Data Received From Digital Audio Control Module C
- Generic OBD-II code · Network
- How the car detects it
- Digital audio control modules are the networked parts of a sound system such as amplifiers, signal processors or media interfaces; the letters A to D merely count them. Ford groups U0237 and U0238, the lost-communication codes for modules C and D, with DSP trouble: 2020–2021 Escape, 2021 F-150, Mach-E, Expedition, Explorer and 2020–2022 Edge could lose all sound while chimes moved to the cluster, cured by a battery-disconnect reset and DSP reprogramming (SSM 49737, 50739, 51778). GM's Saab 9-5 list gives the C partner slot to the multimedia player interface module instead. U0538 itself appears in no bulletin; it means module C still communicates but its audio status or configuration content is rejected, which can mute zones or drop sources.
- What you may notice
- No sound or missing speaker channels
- Warning chimes only from the instrument cluster
- Likely causes
- LikelyAudio module software fault, as in Ford's DSP cases
- PossibleModule C internally faulty
- RarePoor fuse contact or low supply voltage at the module
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.