DTC GMC P2161 Short Explanation

The video focuses on the basic GMC 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:
GMC
Code:
P2161
Definition:
Lost Communication with Evaporative Emission System Leak Detection Control Module
Description:
Network DTC concerns occur during module-to-module communication.
Cause:
Invalid data network concerns - data is transferred within the normal inter-module message,but contains known invalid data.The transmitting module logs a DTC related to the invalid data concern.Missing message network concerns - missing message concerns are logged by the module upon failure to receive a message from another module within a defined retry period.Inline fuse open (if equipped)
Diagnosis:
Check for other powertrain control module (PCM) DTCs or PCM related symptoms. Diagnose all other PCM DTCs or PCM related symptoms first.