U0546Invalid Data Received From Entertainment Control Module — Front
- Generic OBD-II code · Network
- How the car detects it
- The front entertainment control module is the media unit for the front row, usually the head unit or a separate media controller that also supplies rear systems. Visteon's patent describes this layout: a main unit for the front seats and an entertainment module for rear passengers, each with its own microcontroller, trade commands and status as multiplex messages, with the front unit steering sources for the rear. When frames from the front unit reach the network but fail checks for range, counter or length, a receiver such as the rear unit, the cluster or a gateway stores U0546; a silent front unit gives U0245. No manufacturer documents U0546 publicly. Rear screens may lose their source, displays may show wrong media data and audio controls may stop responding.
- What you may notice
- Rear entertainment loses its source or control from the front
- Wrong or frozen media information on displays
- Likely causes
- PossibleHead unit or media controller software fault
- PossibleFront entertainment unit internally faulty
- RareDamaged media bus wiring or connector behind the dash
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.