What does code U049A mean?

Q: What does code U049A mean?

Invalid Data Received From Door Control Module A. U049A means the module that coordinates your vehicle's network received data from Door Control Module A that it judged invalid or implausible. The fault is set when the module's message fails a plausibility or checksum test, not necessarily when the door module stops communicating entirely.

DTC codes / U04xx · Invalid data received from a module / U049A

U049AInvalid Data Received From Door Control Module A

U049A means the module that coordinates your vehicle's network received data from Door Control Module A that it judged invalid or implausible. The fault is set when the module's message fails a plausibility or checksum test, not necessarily when the door module stops communicating entirely.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaInvalid data received from a module

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.