DTC Mazda B2477 Short Explanation
Channel: Maxidot
Date: 2020-10-28

The video focuses on the basic Mazda specific 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:
Mazda
Code:
B2477
Definition:
F-CAN A Malfunction (BUS-OFF (PCM))
Description:
The PCM does not receive any signals via the F-CAN A lines for at least 1 second.When a malfunction is detected,the D indicator blinks,and a Pending DTC,a Confirmed DTC,and the freeze data are stored in the PCM memory.The MIL does not come on.
Cause:
 Check battery and charging system condition Loose or poor connections,or worn or shorted wires "Short" in the F-CAN wires Faulty gauge control module PCM may need to be updated with the latest software Faulty PCM