Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2004 Buick Regal. 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 P0336

Step	Action	Yes	No
Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module (PCM) Connector End Views
1	Did you perform the Diagnostic System Check-Engine Controls?	Go to Step 2	Go to Diagnostic System Check - Engine Controls
2	Attempt to start the engine. Does the engine start and run?	Go to Step 3	Go to Step 4
3	Observe the Freeze Frame/Failure Records data for this DTC. 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. Does the DTC fail this ignition?	Go to Step 4	Go to Intermittent Conditions
4	Test for the following conditions in the medium resolution engine speed signal circuit between the ignition control module (ICM) and the powertrain control module (PCM): High resistance An open A short to voltage A short to ground A short to other circuits Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 12	Go to Step 5
5	Test for an open in the crankshaft position (CKP) sensor 2 signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 12	Go to Step 6
6	Turn OFF the ignition. Disconnect the crank sensor. Connect a test lamp to B+ voltage. Connect a DMM between the medium resolution engine speed signal circuit at the PCM connector and a good ground. Turn ON the ignition, with the engine OFF. Repeatedly touch the test lamp to the CKP sensor 1 signal circuit at the crank sensor connector while observing the DMM. Does the measured voltage change?	Go to Step 8	Go to Step 7
7	Test for an intermittent or for poor connections at the ICM. Refer to Circuit Testing , Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 12	Go to Step 10
8	Inspect for the following conditions: Incorrect harness routing near secondary ignition components Ignition coil arcing to the wiring harness or to the ignition control module The ignition coils for cracks, carbon tracking, or other signs of damage-Refer to Ignition Coil(s) Replacement . Spark plug wires arcing-Refer to Spark Plug Wire Replacement . Did you find and correct the condition?	Go to Step 12	Go to Step 9
9	Test for poor connections at the PCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you complete the repair?	Go to Step 12	Go to Step 11
10	Replace the ICM. Refer to Ignition Control Module Replacement . Did you complete the replacement?	Go to Step 12	-
11	Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement . Did you complete the replacement?	Go to Step 12	-
12	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 13
13	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