DTC Infiniti P1721 Short Explanation

The video focuses on the basic Infiniti 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:
Infiniti
Code:
P1721
Definition:
E or G request NG
Description:
Communication failure between body integrated unit and ECM.
Cause:
Open or short circuit between body integrated unit and fuse Open or short circuit between the body integrated unit and ignition switch Open circuit of the body integrated unit ground circuit Faulty ECM ground circuit Open circuit of the harness between the body integrated unit and ECM Faulty body integrated unit Faulty ECM