DTC Chrysler B178E-15 Short Explanation
Channel: Maxidot
Date: 2020-11-29

The video focuses on the basic Chrysler 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:
Chrysler
Code:
B178E 15
Definition:
HECU Fault
Description:
Case 1 • The test actuates all valves in series to detect shorts or shunts between the valve lines.Faults are detected if there is an error during the test.Case 2 • The drift test is executed only once during an ignition Cycle. If it detects partly shorted valve coils, almost inoperative coils or malfunction of the valve driver,a failure is recognized.
Cause:
 Inoperative HECU
Failure Type:
Circuit Short To Battery or Open
This sub type is used for failures, where the condition detected by the control module is the same for either indicated failure mode.