Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2007 Saturn Vue. 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 P0120

Step	Action	Values	Yes	No
Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Controls Connector End Views or Engine Control Module Connector End Views
1	Did you perform the Diagnostic System Check - Vehicle?	-	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Turn ON the ignition, with the engine OFF. Observe the throttle position (TP) sensor voltage with the accelerator pedal in the rest position with a scan tool. Does the scan tool indicate voltage less than the first value or greater than the second value?	0.27 V 4.67 V	Go to Step 5	Go to Step 3
3	Is DTC P2135 also set?	-	Go to Diagnostic Trouble Code (DTC) List - Vehicle	Go to Step 4
4	Observe the Freeze Frame/Failure Records for this DTC. Turn OFF the ignition for 90 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 5	Go to Testing for Intermittent Conditions and Poor Connections
5	Turn OFF the ignition. Disconnect the throttle body harness connector. Turn ON the ignition, with the engine OFF. Observe the TP sensor 1 voltage parameter with a scan tool. Does the scan tool indicate that the voltage is less than the specified value?	0.25 V	Go to Step 6	Go to Step 11
6	Connect a fused jumper wire between the TP sensor 5-volt reference circuit and the TP sensor signal circuit at the throttle body harness connector. Observe the TP sensor 1 voltage parameter with a scan tool. Does the scan tool indicate the TP sensor 1 voltage is more than the specified value?	4.8 V	Go to Step 7	Go to Step 8
7	Turn OFF the ignition for 90 seconds. Allow the engine control module (ECM) to completely power down. This can be verified by the loss of communication on the scan tool. Measure the resistance from the low reference circuit of the TP sensor to the ECM case with the DMM. Is the resistance less than the specified value?	5 Ω	Go to Step 17	Go to Step 13
8	Measure the voltage of the TP sensor 1 5-volt reference circuit with a scan tool. Does the DMM indicate voltage more than the specified value?	4.8 V	Go to Step 10	Go to Step 9
9	Does the DMM indicate voltage less than the specified value on the TP sensor 1 5-volt reference circuit?	5 V	Go to Step 14	Go to Step 16
10	Test the TP sensor 1 signal circuit for an open or for high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 12
11	Test the TP sensor 1 signal circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 19
12	Test the TP sensor 1 signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 19
13	Test the TP sensor 1 low reference circuit for an open or for high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 19
14	Test the TP sensor 1 5-volt reference circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 15
15	Test the TP sensor 1 5-volt reference circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 19
16	Test the TP sensor 1 5-volt reference circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	-	Go to Step 21	-
17	Inspect for poor connections at the throttle body harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 18
18	Replace the throttle body assembly. Refer to Throttle Body Assembly Replacement . Did you complete the replacement?	-	Go to Step 21	-
19	Inspect for poor connections at the ECM harness connector. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	-	Go to Step 21	Go to Step 20
20	Replace the ECM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement?	-	Go to Step 21	-
21	Clear the DTCs with a scan tool. Turn OFF the ignition for 90 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 22.
22	IMPORTANT: Be aware that repairing one individual condition may correct more than one DTC. 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