Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
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-Engine Controls?	Go to Step 2	Go to Diagnostic System Check - Engine Controls
2	Perform the Crankshaft Position (CKP) System Variation Learn procedure. Refer to CKP System Variation Learn Procedure . Does the scan tool display Learned this ignition?	Go to Step 4	Go to Step 3
3	Inspect for the following conditions: Worn crankshaft main bearings Debris between the CKP sensor and the reluctor wheel A damaged reluctor wheel Excessive crankshaft runout A damaged Crankshaft Refer to Crankshaft and Bearings Cleaning and Inspection in Engine Mechanical. Electromagnetic interference in the signal circuit of the CKP sensor The ignition switch is in the ON position until the battery has insufficient system voltage. A 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 for 30 seconds. Start the engine. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records. 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	System OK