DTC Hummer B0004 second 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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#maxidot #dtc #howto #diagnostictroublecode




Make: 
HUMMER 
Code: 
B0004 
Definition: 
Vehicle Speed Information Circuit Open 
Cause: 
The navigation radio compares the vehicle speed signal from the PCM to the GPS location signal. If the GPS signal indicates that the vehicle has traveled 4 km (2.5 mi) but no vehicle speed signal was received, the radio sets the DTC. 
Related Service Bulletins: 
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