DTC GMC P2271 Short Explanation
Channel: Maxidot GMC
Date: 2020-06-20

The video focuses on the basic GMC 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:
GMC
Code:
P2271
Definition:
HECU Fault
Description:
Enable Conditions: 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 2The 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:
 Faulty HECU