U055CInvalid Data Received From Special Purpose Vehicle Control Module C
- Generic OBD-II code · Network
- How the car detects it
- With U055C a module rejects the content of messages sent by special purpose controller C, the third of four slots for conversion electronics. No maker publishes a code-specific description. Ford's body builder bulletin for the 2023 Super Duty points to a typical pitfall: the factory interface module, the infotainment unit and the body control module all need matching software before the upfitter tool can talk to them, and trucks built before a June 2023 cut-off require a reflash. Out-of-step software on either side therefore produces data the receiver cannot accept. Diagnosis starts with the conversion paperwork and software levels rather than with the vehicle's own modules. U025B covers total silence of controller C.
- What you may notice
- Functions controlled by the conversion do not respond as configured
- Code appears after a software update or conversion work
- Likely causes
- LikelySoftware levels of conversion controller and vehicle modules out of step
- PossibleConversion equipment added or changed without updating controller C
- RareDamaged bus wiring in the conversion harness
- Repair
- Medium · Usually a job for a workshop.Typical cost: €80 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.