DTC Hummer P0654 Short Explanation
Channel: Maxidot Hummer
Date: 20/06/2020

The video focuses on the basic Hummer 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:
HUMMER
Code:
P0654
Definition:
Abnormality in FR or RL wheel cut valve system
Description:
The diagnostic trouble code will be set under the cases below: 1).  The solenoid valve is not energized even after ASC-ECU has turned on the valve relay (Open circuit is present in the power supply circuit to the ASC-ECU solenoid valve,  or the valve relay has failed).  2).  The solenoid valve is not activated even after ASC-ECU has turned on the valve relay (Open circuit is present in the solenoid valve circuit in ASC-ECU,  or the valve relay has failed).  3).  After ASC-ECU has turned off the driving transistor,  the solenoid valve still remains energized (short in the solenoid valve circuit).  4).  When a solenoid valve failure is detected.
Cause:
 ASC-ECU malfunction