DTC Hummer P0722 Short Explanation
Channel: Maxidot Hummer
Date: 2020-06-20

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:
P0722
Definition:
Transfer Case Lock Circuit Short to Ground
Description:
Ignition ON System voltage 10.5-18 V
Cause:
The system tests the lock solenoid circuits by checking for unwanted voltage.The underhood fuse block supplies B+ on the battery positive voltage circuit and reads the voltage back on the lock solenoid control circuit.If the TCCM detects a low voltage return when a high voltage is expected,or a high voltage return when a low voltage is expected,the DTC is logged.The fault must remain current for 1 second to set the DTC.