DTC Jeep B1408-12 Short Explanation
The video focuses on the basic Jeep 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:
Jeep
Code:
B1408 12
Definition:
Control Module Communication Bus OFF
Description:
When any of the following is detected: 1. With the IG1 terminal voltage is between 10 and 17.4 V,after the output of data from the skid control ECU is completed,the sending continues for 5 seconds or more.2. The condition that bus OFF state occurs once or more within 0.1 seconds occurs 10 times in succession.(Sent signals cannot be received. ) 3. With the IG1 terminal voltage is between 10 and 17.4 V,a delay in receiving data from the yaw rate and acceleration sensor and steering angle sensor continues for 1 second or more.4. With the IG1 terminal voltage is between 10 and 17.4 V,the following occurs 10 times in succession.The condition that a delay in receiving data from the yaw rate and acceleration sensor and steering angle sensor occurs more than once within 5 seconds
Cause:
CAN communication system
Failure Type:
Circuit Short To Battery
This sub type is used for failures, where the control module measures vehicle system (battery positive) potential for greater than a specified time period or when some other value is expected.