Conditions for Clearing the MIL/DTC

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 P0641

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 - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
2	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 3	Go to Intermittent Conditions
3	Visually and physically inspect the powertrain control module (PCM) and engine grounds. Ensure that the grounds are clean and secure. 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 12	Go to Step 4
4	Turn OFF the ignition. Disconnect the supercharge inlet pressure (SCIP) sensor. Turn ON the ignition, with the engine OFF. Measure the voltage from the 5-volt reference circuit of the A/C refrigerant pressure sensor harness connector to a good ground with a DMM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the voltage within the specified range?	4.8-5.2 V	Go to Step 6	Go to Step 5
5	Is the voltage more than the specified value?	5.2 V	Go to Step 9	Go to Step 7
6	Connect the SCIP sensor. Disconnect the accelerator pedal position sensor. Measure the voltage from the 5-volt reference circuit of the accelerator pedal position sensor 2 harness connector to a good ground with a DMM. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Is the voltage within the specified range?	4.8-5.2 V	Go to Intermittent Conditions	Go to Step 11
7	Observe the DMM while disconnecting all other devices that are connected to the 5-volt reference 1 circuit, one at a time. If the voltage changes when one of the components are disconnected, replace the component. Refer to the appropriate replacement procedure below: Manifold Absolute Pressure (MAP) Sensor Replacement (TMAP)Manifold Absolute Pressure (MAP) Sensor Replacement (SCIP) for SCIP sensor replacement Camshaft Position (CMP) Sensor Replacement Barometric Pressure (BARO) Sensor Replacement Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement in Heating, Ventilation, and Air Conditioning Fuel Tank Pressure Sensor Replacement Throttle Body Assembly Replacement Was a component replaced?	-	Go to Step 12	Go to Step 8
8	Test the 5-volt reference 1 circuits for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	-	Go to Step 12	Go to Step 10
9	Turn OFF the ignition. Disconnect the PCM. Turn ON the ignition, with the engine OFF. Test the following circuits for a short to voltage: The 5-volt reference 1 circuits The barometric pressure (BARO) sensor signal circuit The fuel tank pressure (FTP) sensor signal circuit The A/C refrigerant pressure sensor signal circuit The SCIP sensor 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 10
10	Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement?	-	Go to Step 12	-
11	Replace the A/C refrigerant pressure sensor. Refer to Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement in Heating, Ventilation, and Air Conditioning. Did you complete the replacement?	-	Go to Step 12	-
12	Clear the DTCs with a scan tool. Turn OFF the ignition for 60 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 3	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 - Vehicle in Vehicle DTC Information	System OK