U0556Invalid Data Received From Front Display Interface Module
- Generic OBD-II code · Network
- How the car detects it
- The front display interface module is the screen unit in the center of the dash; GM calls the matching node info display module (Saab 9-5 2011, U0255), Ford uses FDIM. The display mostly shows what other modules feed it. Ford examples: on the Escape (2016–2019) and Focus/C-Max (2016–2018) the FDIM ramps its backlight up and down in auto-dim mode, which looks like flicker but is normal (SSM 47748); on the 2020 Aviator the APIM configuration made the FDIM show the wrong number of radio presets (SSM 49092). U0556 is set by a receiver that gets FDIM frames, e.g. touch inputs or status, with implausible content; U0255 covers silence, U0558 the combined controls/display unit. No manufacturer documents U0556. Touch inputs may be ignored or the screen may act oddly.
- What you may notice
- Touchscreen does not respond or reacts to inputs that were not made
- Wrong or incomplete content shown on the center display
- Likely causes
- PossibleDisplay module software fault or level not matching the infotainment unit
- PossibleWrong configuration of display or infotainment module after replacement or update
- RareFront display module internally faulty (touch sensor or electronics)
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,100
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.