What does code U0504 mean?

Q: What does code U0504 mean?

Invalid Data Received From Door Control Module E. U0504 means the vehicle's main network gateway or engine computer expected a valid data message from Door Control Module E and either received corrupted information or no usable message at all. The module that sets this code is not necessarily the door module itself; it is the computer that monitors the network and noticed the missing or invalid data.

DTC codes / U05xx · Network communication / U0504

U0504Invalid Data Received From Door Control Module E

U0504 means the vehicle's main network gateway or engine computer expected a valid data message from Door Control Module E and either received corrupted information or no usable message at all. The module that sets this code is not necessarily the door module itself; it is the computer that monitors the network and noticed the missing or invalid data.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaNetwork communication

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