DTC Buick B2425-0D Short Explanation

Описание

The video focuses on the basic Buick diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
Buick
Code:
B2425 0D
Definition:
Internal Control Module Software Incompatibility. General Failure Information
Description:
The control modules communicate with each other for exchange of information in a network via a standardized serial communication procedure - CAN (Controller Area Network).The Central electronic module (CEM) regularly transmits messages on the CAN network.These messages contain information about which signal configuration ID applies to the vehicle.The control modules on the CAN network have the same signal configuration ID so that they can communicate with each other.The control module compares its configuration ID with the signal configuration transmitted on the control area network (CAN) by the central electronic module (CEM).The diagnostic trouble code (DTC) is stored if the control module detects that: The control modules configuration ID differ from the ID that the Central electronic module (CEM) transmits.Incorrect value lasts longer than 15 seconds.The control modules test for the diagnostic trouble code (DTC) starts in the event of: Starting the control modules CAN communication.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.
Cause:
Incorrect configuration ID (the control module is not intended for this vehicle,for example it is a used control module with different software or hardware).Open-circuit in the CAN cables between the control module and the Central Electronic Module (CEM).