P2101

DTC P2101

Circuit Description

The commanded throttle position (TP), based on accelerator pedal position (APP) and possibly other limiting factors, is compared to the actual TP. The two values should be within a calibrated range of each other. Both the powertrain control module (PCM) and the throttle actuator control (TAC) module redundantly monitor the commanded and actual TP. DTC P2101 sets if the PCM detects an out-of-range condition between the commanded and the actual throttle position.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P2101 Control Module Throttle Actuator Position Performance

Conditions for Running the DTC

* DTCs P0068, P0601, P0602, P0604, P0606, P1516, P2108, U0107 are not set.
* DTCs P0120 and P0220 are not active at the same time.
* The engine is running.
OR
* The ignition voltage is more than 8.5 volts with the ignition ON.
* The TAC system is not in the battery saver mode.
* DTC P2101 runs continuously once the above conditions are met.

Conditions for Setting the DTC

The PCM detects that the commanded and actual throttle positions are not within 6 percent of each other for more than 0.19 second.

Action Taken When the DTC Sets

* The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
* The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame and/or the Failure Records.
* The control module commands the TAC system to operate in the Reduced Engine Power mode.
* A message center or an indicator displays Reduced Engine Power.
* Under certain conditions the control module commands the engine OFF.

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.

Diagnostic Aids

* Inspect for mechanical concerns or binding that may be temperature related. Components may not move freely in extreme heat or cold due to the presence of contaminants or ice formation.
* Inspect the TAC module connectors for signs of water intrusion. If water intrusion occurs, multiple DTCs may set without any circuit or component conditions found during diagnostic testing.
* When the TAC module detects a condition within the TAC system, more than one TAC system related DTC may set. This is due to the many redundant tests run continuously on this system. Locating and repairing an individual condition may correct more than one DTC. Disconnecting components during testing may set additional DTCs. Remember this if you review the stored information in Capture Info.
* For an intermittent, refer to Testing for Intermittent Conditions and Poor Connections. Component Tests and General Diagnostics

Test Description

Step 1 - Step 8:

Step 9 - Step 15:

The numbers below refer to the step numbers on the diagnostic table.
4. If the TP indicated angle does not follow the movement of the throttle blade and no TP sensor DTCs are set, there is a mechanical condition with the throttle shaft or the TP sensor.
15. Locating and repairing an individual condition may correct more than 1 DTC.