U0234Lost Communication With Convenience Recall Module
- Generic OBD-II code · Network
- How the car detects it
- U0234 states that the convenience recall module has fallen silent on the network. Convenience recall means stored personal settings brought back on request or by key, typically seat, outside mirror, pedal and column positions and audio presets; patent US7525931B2 shows such a recall session started by a networked door module message. No manufacturer documents U0234 publicly, and many brands place this job in seat or door modules that carry their own codes, such as U0208 for a memory seat module, so the unit behind the code must be taken from the maker's data. GM's general logic applies: periodic status message missing while supply is 9-16 V. U0535 covers invalid data. Memory buttons stop working; driving is unaffected, no MIL expected.
- What you may notice
- Memory buttons for seat and mirrors without function
- Driver profile not recalled with the key
- Likely causes
- LikelyModule without power or ground (fuse, connector under seat or door)
- PossibleHarness under the seat pinched by seat travel
- RareConvenience recall module faulty
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.