AutoCodes – GMC – P16A2 2014 GMC Sierra

P16A2 2014 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 2014 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.

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Code Popularity 184

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
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Code P16A2 2014 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 2014 GMC Sierra - Throttle Position Sensor Communication Circuit Performance - AutoCodes.com — P16A2 2014 GMC Sierra Code - Throttle Position Sensor Communication Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P16A2 2014 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 2014 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 2014 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.

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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 P16A2 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P16A2 in a 2014 GMC Sierra related to the Throttle Position Sensor Communication Circuit Performance?

- Common symptoms include poor throttle response, stalling, rough idle, and possibly a check engine light.

2. What are the possible causes of OBDII code P16A2 in a 2014 GMC Sierra?

- The code P16A2 can be triggered by issues such as a faulty throttle position sensor, damaged wiring or connectors, or a problem with the throttle body.

3. How can I diagnose the Throttle Position Sensor Communication Circuit Performance issue in my 2014 GMC Sierra?

- To diagnose the issue, you can use an OBDII scanner to retrieve the specific fault code P16A2, visually inspect the wiring and connectors for any damage, and test the throttle position sensor for proper operation.

4. Are there any quick repair tips for addressing OBDII code P16A2 in a 2014 GMC Sierra?

- Quick repair tips include checking and cleaning the throttle body, ensuring proper connection of the throttle position sensor, and resetting the ECU to see if the code reoccurs.

5. Can I continue to drive my 2014 GMC Sierra with OBDII code P16A2 related to the Throttle Position Sensor Communication Circuit Performance?

- It is not recommended to continue driving with this issue as it can lead to poor engine performance and potential safety hazards. It's best to address the problem promptly.

6. How much does it typically cost to repair OBDII code P16A2 in a 2014 GMC Sierra?

- The cost of repair can vary depending on the exact cause of the issue. It might range from a simple sensor replacement to more extensive wiring repairs, so it's best to get a professional diagnosis for an accurate estimate.

7. Is it possible to reset the OBDII code P16A2 in a 2014 GMC Sierra without fixing the underlying issue?

- While you can clear the code temporarily, it will likely reappear if the root cause is not addressed. It's important to fix the underlying problem to prevent further issues.

8. Can a DIY enthusiast repair OBDII code P16A2 in a 2014 GMC Sierra, or is it best left to a professional mechanic?

- Depending on your skills and experience with automotive repairs, you may be able to address simpler causes like sensor replacement. However, complex wiring issues or sensor calibration may require professional expertise.

9. How long does it take to repair OBDII code P16A2 related to Throttle Position Sensor Communication Circuit Performance in a 2014 GMC Sierra?

- The repair time can vary based on the specific cause of the issue. Simple fixes like sensor replacement may take an hour or two, while more complex wiring repairs could extend the repair time.

10. Will fixing OBDII code P16A2 improve the overall performance and fuel efficiency of my 2014 GMC Sierra?

- Yes, addressing the Throttle Position Sensor Communication Circuit Performance issue can help improve engine performance, throttle response, and fuel efficiency in your GMC Sierra.