What does code U024A mean?

Q: What does code U024A mean?

Lost Communication With Interior Lighting Control Module A. U024A is a generic communication fault indicating that the module responsible for interior lighting (often called the body control module or a dedicated lighting controller) has stopped exchanging data on the vehicle's controller area network (CAN) bus. The code is set when other modules on the network, typically the gateway or body control module, fail to receive expected periodic messages from the interior lighting control module for a calibrated time period.

DTC codes / U02xx · Lost communication with a control module / U024A

U024ALost Communication With Interior Lighting Control Module A

U024A is a generic communication fault indicating that the module responsible for interior lighting (often called the body control module or a dedicated lighting controller) has stopped exchanging data on the vehicle's controller area network (CAN) bus. The code is set when other modules on the network, typically the gateway or body control module, fail to receive expected periodic messages from the interior lighting control module for a calibrated time period.

SystemNetwork

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaLost communication with a control 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.