What does code U02C0 mean?

DTC codes / U02xx · Lost communication with a control module / U02C0

U02C0Lost Communication With Active Radiator Air Flow Control Module A

U02C0 is a generic network communication code indicating that the primary control module has lost contact with the Active Radiator Air Flow Control Module A over the vehicle's data bus. The computer detects this when it stops receiving the periodic status messages that the module is programmed to broadcast, often after a set number of missed messages or a timeout period.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

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.