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 P0036

Step	Action	Values	Yes	No
Schematic Reference: Engine Controls Schematics Connector End View Reference: Powertrain Control Module (PCM) Connector End Views or Engine Controls 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	IMPORTANT: The HO2S 2 Heater parameter may toggle to 0.00 A momentarily. Start the engine. Allow the engine to idle at operating temperature. Refer to Scan Tool Data List . Observe the HO2S 2 Heater parameter with a scan tool. Is the amperage within the specified range?	0.36-0.76 A	Go to Step 3	Go to Step 4
3	Observe the Freeze Frame/Failure Records 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. Did the DTC fail this ignition?	-	Go to Step 4	Go to Intermittent Conditions
4	Inspect the O2 SSR fuse for an open. Is the fuse open?	-	Go to Step 5	Go to Step 6
5	Test the heated oxygen sensor (HO2S) 2 heater ignition 1 voltage circuit for a short to ground. Refer to Circuit Testing , Wiring Repairs , and Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 19	Go to Step 13
6	IMPORTANT: Use a known good ground. DO NOT use the HO2S 2 heater low control circuit or the HO2S low signal circuit. Turn OFF the ignition. Disconnect the HO2S 2. Probe the HO2S 2 heater ignition 1 voltage circuit, on the engine harness side, with a test lamp that is connected to a good ground. Refer to Probing Electrical Connectors in Wiring Systems. Turn ON the ignition, with the engine OFF. Does the test lamp illuminate?	-	Go to Step 7	Go to Step 16
7	Connect a test lamp between the HO2S 2 heater ignition 1 voltage circuit and the HO2S 2 heater low control circuit on the engine harness side. Does the test lamp illuminate?	-	Go to Step 10	Go to Step 8
8	Start the engine. Does the test lamp illuminate?	-	Go to Step 14	Go to Step 9
9	Turn OFF the engine. Turn ON the ignition with the engine OFF. Measure the voltage from the HO2S 2 heater low control circuit, on the engine harness side, to a good ground with a DMM. Refer to Circuit Testing in Wiring Systems. Is the voltage more than the specified value?	1 V	Go to Step 11	Go to Step 12
10	Test the HO2S 2 heater low control circuit for a short to ground. Refer to Circuit Testing , Wiring Repairs , and Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 19	Go to Step 15
11	Test the HO2S 2 heater low control circuit for a short to voltage. Refer to Circuit Testing , Wiring Repairs , and Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 19	Go to Step 15
12	Test the HO2S 2 heater low control circuit for an open. Refer to Circuit Testing , Wiring Repairs , and Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 19	Go to Step 15
13	Test the HO2S 2 heater ignition 1 voltage circuit, on the sensor side of the HO2S connector, for a short to ground. Refer to Circuit Testing in Wiring Systems. Is the sensor shorted to ground?	-	Go to Step 19	Go to Intermittent Conditions
14	Test for an intermittent and for a poor connection at the HO2S 2. Refer to Testing for Intermittent Conditions and Poor Connections , Connector Repairs , and Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 19	Go to Step 17
15	Test for shorted terminals and poor connections at the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 19	Go to Step 18
16	Repair the open or high resistance in the HO2S 2 heater ignition 1 voltage circuit. Refer to Wiring Repairs and Heated Oxygen Sensor (HO2S) Wiring Repairs in Wiring Systems. Did you complete the repair?	-	Go to Step 19	-
17	NOTE: Refer to Heated Oxygen Sensor (HO2S) Resistance Learn Reset Notice in Cautions and Notices. Replace the HO2S 2. Refer to Heated Oxygen Sensor Replacement - Position 2 .Did you complete the replacement?	-	Go to Step 19	-
18	Replace the PCM. Refer to Powertrain Control Module (PCM) Replacement . Did you complete the replacement?	-	Go to Step 19	-
19	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 20
20	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