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 P2135

Step	Action	Yes	No
Schematic Reference: Engine Controls Schematics Connector End View Reference: Powertrain Control Module (PCM) Connector End Views and 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	Are any other DTCs set?	Go to Diagnostic Trouble Code (DTC) List	Go to Step 3
3	Replace the throttle body assembly. Refer to Throttle Body Assembly Replacement (L26) or Throttle Body Assembly Replacement (L32) . Did you complete the replacement?	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	IMPORTANT: Be aware that repairing 1 individual condition may correct more than 1 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	System OK