U049AInvalid Data Received From Door Control Module A
- Generic OBD-II code · Network
- How the car detects it
- U049A reports implausible data from door control module A, usually the driver's door: the unit that runs window lift, lock and mirror and reads the door switches. The body controller or gateway still hears it but rejects the content because a value is undefined, a counter jumps or a checksum fails. Chrysler's bulletin 08-061-12 for the 2005-2010 300 and Charger names the lost-contact partner U0199 the driver door module (DDM), with front windows and locks dead; a Yazaki patent shows how such a door unit relays CAN commands to its motors over a LIN sub-bus. No maker documents U049A publicly; U0501 to U0503 cover doors B to D. Expect a driver's door that ignores its switches or central locking; no MIL.
- What you may notice
- Driver window or mirror switches without function
- Central locking ignores the driver's door
- Likely causes
- LikelyChafed wires or loose pins in the door harness between body and door
- PossibleDriver door module internally faulty, for example after water ingress
- RareWrong configuration or software after module replacement or retrofit
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.