Diagnostic trouble code U110B, when observed in a 2009 Mercedes-Benz E350, indicates a communication fault within the vehicle’s Controller Area Network (CAN) bus system. Specifically, it suggests a loss of communication with the Steering Column Module (SCM). This module is responsible for various functions related to the steering system, including but not limited to, electronic steering lock control, steering wheel switch data transmission, and potentially, shift lever position information. The absence of communication hinders these functions and triggers the diagnostic code.
The proper operation of the CAN bus network is critical for seamless interaction between the various electronic control units within the vehicle. A failure in communication, such as that indicated by U110B, can lead to a range of issues. These may include the inability to start the vehicle due to a malfunctioning electronic steering lock, compromised functionality of steering wheel-mounted controls, and potential disruptions to other related systems. Addressing this communication fault is essential for restoring the vehicle’s full operational capacity and ensuring driver safety.
