What does code U0345 mean?

DTC codes / U03xx · Software and configuration mismatches / U0345

U0345Software Incompatibility With Hybrid/EV Battery Interface Control Module L

U0345 is a network communication code indicating that a control module has detected a software incompatibility with the hybrid or electric vehicle battery interface control module, often called the Battery Energy Control Module (BECM). The computer compares software versions and configuration data over the CAN (Controller Area Network) bus and flags a mismatch when the battery interface module's software does not match what the other modules expect.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaSoftware and configuration mismatches

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