DTC P2271 GMC

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 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.