Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
Clear the MIL and the DTC with a scan tool.

DTC P0315

Step	Action	Yes	No
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	IMPORTANT: The Crankshaft Position Variation Learn Procedure may have to be repeated up to 5 times before the procedure is learned. Perform the Crankshaft Position (CKP) System Variation Learn Procedure. Refer to Crankshaft Position System Variation Learn .Does the scan tool display Learned this ignition?	Go to Step 4	Go to Step 3
3	If the CKP system variation learn procedure cannot be performed successfully, check for the following conditions and correct as necessary: Worn crankshaft main bearings A damaged reluctor wheel Excessive crankshaft runout A damaged crankshaft Interference in the signal circuit of the CKP sensor Any foreign material passing between the CKP sensor and the reluctor wheel A coolant temperature that is not within the Conditions For Running the DTC The ignition switch is in the ON position until the battery is drained. A powertrain control module (PCM) power disconnect with the ignition ON may erase the stored value and set the DTC P0315. Did you complete the inspection?	Go to Step 4	-
4	Clear the DTCs with a scan tool. Turn OFF the ignition. Start the engine. Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Did the DTC fail this ignition?	Go to Step 2	Go to Step 5
5	Observe the Capture Info with a scan tool. Are there any DTCs that have not been diagnosed?	Go to Diagnostic Trouble Code (DTC) List - Vehicle	System OK