U0331Software Incompatibility With Body Control Module A
- Generic OBD-II code · Network
- How the car detects it
- Body control module A is the first of several body controllers on vehicles that spread lighting, locking, wipers and power distribution over more than one unit. With a single body controller the same mismatch is reported as U0322; U0339 covers unit B. U0331 means a partner module finds the software or configuration of unit A unfit. No manufacturer documents U0331 publicly, and none reveals which controller is labelled A. Jaguar calls its auxiliary junction box body control module B (recall J017), leaving the central junction box as the leading body unit; on 2016–2017 XF models that would not start with both smart keys inside, Jaguar reconfigured that box to the latest level (K424). Ford cured failed BCM installations on many 2016–2017 models with a newer IDS release (SSM 50097). Body functions may fail; no MIL.
- What you may notice
- Lighting, locking or wiper functions fail or behave oddly
- Keyless start or remote locking may not work
- Several modules store network codes after body module work
- Likely causes
- LikelyBody control module A replaced without loading the vehicle configuration
- PossibleProgramming aborted or corrupted by an outdated diagnostic tool release
- RareOther body modules updated while unit A stayed on its old level
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €80 – €900
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.