P2101

DTC P2101

Circuit Description

The commanded throttle position is compared to the actual throttle position. Both values should be within a calibrated range of each other. The engine control module (ECM) continuously monitors the commanded and actual throttle positions. If the ECM detects that the difference in these values are greater than the calibrated range, DTC P2101 will set.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC P2101 Throttle Actuator Position Performance

Conditions for Running the DTC

* The ignition is ON.
* The system is not in Battery Saver Mode.
* DTC P0068 is not set.
* The battery voltage is more than 8 volts.
* DTC P2101 runs continuously when the above conditions are met.

Conditions for Setting the DTC

The difference between the predicted and the actual throttle position is more than a calibrated amount for more than 0.6 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 a condition in which the throttle valve may have been held open.
* Inspect for conditions in which ice may have formed in the throttle bore.
* If the condition is intermittent, refer to Testing for Intermittent Conditions and Poor Connections in Diagnostic Aids. Component Tests and General Diagnostics

Test Description

Step 1 - Step 11:

Step 12 - Step 14:

The number below refers to the step number on the diagnostic table.
3. The throttle valves are spring loaded in a slightly open position and should move in either direction without binding. The throttle valves should always be under spring pressure.