DTC GMC P0643 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:
P0643
Definition:
Lost Communication With PPS or CPS
Description:
The system voltage is between 9-16 volts.The vehicle power mode requires serial data communication to occur.
Cause:
A supervised periodic message that includes the transmitter module availability has not been received.