Diagnostic Trouble Code (DTC) Information BCM-U042861

Condition

The control modules transmit and receive information via a standardized serial communication method - CAN (Control Area Network). The Steering wheel angle sensor module (SAS) transmits information on the controller area network (CAN), which the other systems can use. The Brake control module (BCM) retrieves the information that can then be used in different brake functions.

The diagnostic trouble code (DTC) is stored if the control module detects:

The signal informs that the Steering wheel angle sensor module (SAS) has not been initiated within 120 seconds at a constant speed above 10 km/h.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

Ignition on.

NOTE:

The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.

Fig 1: Identifying Brake Control Module (BCM)

Courtesy of VOLVO CARS CORPORATION

Substitute Value

Stability control blocked.
Traction control blocked.
Active yaw control (AYC) is blocked.

HINT: BRAKE SYSTEM, ABBREVIATIONS

Possible Source

After starting, without initiating the steering wheel sensor, the driver has driven continuously for more than two minutes above 10 km/h.
Fault-trace the Steering wheel angle sensor module (SAS).

NOTE:

This diagnostic trouble code (DTC) is not due to an internal hardware fault in the Brake control module (BCM) and must not be remedied by replacing the control module.

Fault symptom[s]

Anti-spin warning lamp lit
Stability function is not working
Traction control not working
Anti skid function is not working
Adaptive cruise control; No Functionality
Collision avoidance driver support; No Functionality
Front monitoring/Active safety/City Safety does not work