AutoCodes – GMC – P2101 2015 GMC Sierra

P2101 2015 GMC Sierra Code - Throttle Actuator Position Performance

Quick Answer

The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2101 2015 GMC Sierra indicates Throttle Actuator Position Performance .
Common causes: Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 592

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 13, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2101 2015 GMC Sierra Description

The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. The ECM controls the throttle valve by applying a varying voltage to the control circuits of the Throttle Actuator Control (TAC) motor. The ECM monitors the duty cycle that is required to actuate the throttle valve. The ECM monitors the TP sensor signal/serial data circuit to determine the actual throttle valve position. The TP sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the actual throttle position does not match the predicted throttle position for greater than 1 s.

OBDII Code P2101 2015 GMC Sierra - Throttle Actuator Position Performance - AutoCodes.com — P2101 2015 GMC Sierra Code - Throttle Actuator Position Performance

What does this mean?

What are the Possible Causes of the DTC P2101 2015 GMC Sierra?

Binding or bent Throttle Plate
Faulty Throttle Body Assembly
Throttle Body Assembly harness is open or shorted
Throttle Body Assembly circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2101 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2101 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2101 2015 GMC Sierra code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2101 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2101 in a 2015 GMC Sierra?

- Common symptoms include reduced engine power, hesitation or stalling while driving, and the illumination of the Check Engine Light.

2. What does the OBDII code P2101 "Throttle Actuator Position Performance" mean for a 2015 GMC Sierra?

- This code indicates that there is a malfunction in the throttle actuator control system, specifically relating to the position performance of the throttle actuator.

3. What are some possible causes of OBDII code P2101 in a 2015 GMC Sierra?

- Possible causes include a faulty throttle body, issues with the throttle position sensor, wiring problems, or a malfunctioning electronic throttle control system.

4. How can I diagnose the issue causing OBDII code P2101 in my 2015 GMC Sierra?

- A thorough diagnostic scan using an OBDII scanner can help pinpoint the exact cause of the code. Additionally, visually inspecting the throttle body and related components for any signs of damage or wear can be helpful.

5. Can I still drive my 2015 GMC Sierra with OBDII code P2101 present?

- It is not recommended to continue driving with this code present, as it can lead to performance issues and potentially unsafe driving conditions. It is best to address the underlying problem as soon as possible.

6. Is it possible to reset OBDII code P2101 in a 2015 GMC Sierra without fixing the issue?

- While you can clear the code using an OBDII scanner, the underlying issue causing the code will still persist. It is essential to address the problem to prevent further issues.

7. How can I repair OBDII code P2101 in my 2015 GMC Sierra?

- Repair options may include replacing the throttle body, fixing wiring or sensor issues, or recalibrating the throttle control system. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.

8. Are there any DIY tips for troubleshooting OBDII code P2101 in a 2015 GMC Sierra?

- You can visually inspect the throttle body and related components for any visible damage or loose connections. Checking the wiring harness for any signs of wear or corrosion can also be helpful.

9. How much does it typically cost to repair OBDII code P2101 in a 2015 GMC Sierra?

- The cost of repairs can vary depending on the exact cause of the issue and the labor rates in your area. Expect to pay for parts and labor, with costs potentially ranging from $200 to $600 or more.

10. Can a 2015 GMC Sierra go into "limp mode" due to OBDII code P2101?

- Yes, if the issue causing the code affects the throttle control system significantly, the vehicle may go into "limp mode" to prevent further damage and ensure safety.