AutoCodes – GMC – P16A2 2015 GMC Sierra

P16A2 2015 GMC Sierra Code - Throttle Position Sensor Communication Circuit Performance

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body circuit poor electrical connection. 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: P16A2 2015 GMC Sierra indicates Throttle Position Sensor Communication Circuit Performance.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body harness is open or shorted, Throttle Body circuit poor electrical connection.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 301

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P16A2 2015 GMC Sierra Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects an incorrect message was received over the throttle position sensor signal circuit for greater than 1 s.

OBDII Code P16A2 2015 GMC Sierra - Throttle Position Sensor Communication Circuit Performance - AutoCodes.com — P16A2 2015 GMC Sierra Code - Throttle Position Sensor Communication Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P16A2 2015 GMC Sierra?

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

How to Fix the DTC P16A2 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P16A2 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 P16A2 2015 GMC Sierra code?

Need more information on how to fix the P16A2 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16A2 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P16A2 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P16A2 in a 2015 GMC Sierra related to the Throttle Position Sensor Communication Circuit Performance?

- Common symptoms include poor engine performance, reduced power, hesitation during acceleration, and the illumination of the Check Engine Light.

2. What are the potential causes of OBDII code P16A2 in a 2015 GMC Sierra?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors in the communication circuit, software issues, or a problem with the Engine Control Module (ECM).

3. How can I diagnose OBDII code P16A2 in my 2015 GMC Sierra?

- Diagnosis typically involves using a scan tool to retrieve the specific fault code, checking the throttle position sensor for proper operation, inspecting the wiring and connectors for damage, and performing a thorough visual inspection of related components.

4. Can I continue driving my 2015 GMC Sierra with OBDII code P16A2 present?

- It is not recommended to continue driving with this fault code present, as it can lead to further damage to the engine and other components. It's best to address the issue promptly to avoid potential safety hazards.

5. How can I repair OBDII code P16A2 in my 2015 GMC Sierra?

- Repair methods may include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, updating the ECM software, or resetting the fault code after completing necessary repairs.

6. Will resetting the fault code make OBDII code P16A2 disappear permanently?

- Resetting the fault code may clear the Check Engine Light temporarily, but if the underlying issue causing the fault code is not addressed, the code is likely to reappear after driving cycles.

7. Is it possible to fix OBDII code P16A2 in a 2015 GMC Sierra without professional help?

- While some DIY enthusiasts may be able to diagnose and repair simple issues related to this fault code, it is recommended to seek professional assistance for a thorough diagnosis and proper repair to ensure the issue is fully resolved.

8. How critical is it to address OBDII code P16A2 promptly in a 2015 GMC Sierra?

- It is important to address this fault code promptly to prevent further damage to the engine and ensure the vehicle operates as intended. Ignoring the issue can lead to decreased performance, potential safety hazards, and increased repair costs.

9. Can extreme weather conditions impact the occurrence of OBDII code P16A2 in a 2015 GMC Sierra?

- Extreme weather conditions can potentially affect the performance of components related to the throttle position sensor communication circuit, leading to the triggering of this fault code. Inspecting these components for weather-related damage is advisable.

10. Are there any preventive maintenance steps I can take to avoid OBDII code P16A2 in my 2015 GMC Sierra?

- Regularly inspecting the throttle position sensor, keeping the wiring and connectors in good condition, and ensuring proper maintenance of the vehicle's electrical system can help prevent issues that may lead to the occurrence of this fault code.