DTC GMC P1639 Short Explanation
Channel: Maxidot GMC
Date: 20/06/2020

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:
P1639
Definition:
CAN Communication Malfunction
Description:
This code is set when PCM detected that worng message is sent or No reception of communication line.Enable Conditions:Engine Run Time ≥ 2sec. Ignition Voltage ≥ 11V Threshold value:CAN communication error Diagnosis Time :Continuous
Cause:
 CAN BUSCAN communication module component