The video focuses on the basic Toyota 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:
Toyota
Code:
P3011 123
Definition:
LF Curtain Airbag Module Circuit Short
Description:
LH side curtain air bag module (front) circuit is shorted to ground.
Cause:
1. Visually check the wiring harness connection.2. Replace the harness if it has visible damage.3. Replace the LH side curtain air bag module.4. Replace the air bag diagnosis sensor unit.5. Replace the related harness.