U0144Lost Communication With Body Control Module D
- Generic OBD-II code · Network
- How the car detects it
- U0144 is logged by one or more control units that no longer receive the cyclic messages of the body controller J2012 calls Body Control Module D. In GM's network logic every node broadcasts a state-of-health message with ignition on; if it stays away while the supply is between 9 and 16 V, the listeners store a code naming the silent unit, not themselves. No manufacturer documents U0144 publicly: GM's U-code list knows only U0140, and Stellantis uses the neighbour U0145 for a BCM LIN bus. What the D unit does is maker-specific, typically a body sub-controller for doors, seats or lighting. U0140 to U0143 and U0145 cover the other body modules. Expect dead comfort functions, no MIL.
- What you may notice
- Body functions handled by module D (locks, lighting, seats) do not respond
- Scan tool cannot reach module D
- Same code stored in several other modules
- Likely causes
- LikelyFuse, power or ground of the body module D missing
- PossibleChafed bus wire or loose, wet connector on the way to module D
- PossibleWeak battery or voltage dip, so the module drops off the bus (history code)
- RareBody module D internally faulty or not programmed
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.