AutoCodes – GMC – P16A0 2016 GMC Sierra

P16A0 2016 GMC Sierra Code - Throttle Position Sensor Communication Circuit Low Voltage

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 Assembly harness is open or shorted, Throttle Body Assembly 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: P16A0 2016 GMC Sierra indicates Throttle Position Sensor Communication Circuit Low Voltage.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly 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 166

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 P16A0 2016 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 a low voltage circuit condition on the throttle position sensor signal circuit for greater than 1 s.

OBDII Code P16A0 2016 GMC Sierra - Throttle Position Sensor Communication Circuit Low Voltage - AutoCodes.com — P16A0 2016 GMC Sierra Code - Throttle Position Sensor Communication Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P16A0 2016 GMC Sierra?

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 P16A0 2016 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 P16A0 2016 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 P16A0 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P16A0 in a 2016 GMC Sierra related to the Throttle Position Sensor Communication Circuit Low Voltage?

- Common symptoms include reduced engine power, hesitation or stalling while driving, and the illumination of the check engine light.

2. What are the possible causes of the OBDII code P16A0 in a 2016 GMC Sierra?

- Possible causes may include a faulty throttle position sensor, wiring issues in the communication circuit, a defective engine control module (ECM), or poor electrical connections.

3. How can I diagnose the Throttle Position Sensor Communication Circuit Low Voltage issue in my 2016 GMC Sierra?

- Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, visually inspecting the wiring and connections, testing the throttle position sensor, and checking the ECM for any faults.

4. Can I continue to drive my 2016 GMC Sierra with the P16A0 code until I have it repaired?

- It is not recommended to drive the vehicle with the P16A0 code present, as it can lead to further damage and potentially unsafe driving conditions due to the associated symptoms.

5. What are some tips for repairing the Throttle Position Sensor Communication Circuit Low Voltage issue in a 2016 GMC Sierra?

- Repair tips may include replacing the throttle position sensor, repairing or replacing damaged wiring, ensuring proper electrical connections, and resetting the ECM after the repair is completed.

6. Is it possible to clear the P16A0 trouble code in a 2016 GMC Sierra without addressing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, it will not fix the root cause of the problem, and the code is likely to reappear once the issue persists.

7. How much does it typically cost to repair the Throttle Position Sensor Communication Circuit Low Voltage problem in a 2016 GMC Sierra?

- Repair costs can vary depending on the specific cause of the issue, but it may involve parts and labor expenses ranging from $100 to $500 or more, depending on the extent of the repairs needed.

8. Can a DIY enthusiast with basic mechanical skills fix the P16A0 code in a 2016 GMC Sierra?

- While some DIY enthusiasts may be able to address simple causes like loose connections, diagnosing and repairing more complex issues related to the throttle position sensor circuit may require specialized tools and expertise.

9. How urgent is it to address the P16A0 code in my 2016 GMC Sierra?

- It is generally recommended to address the P16A0 code promptly to prevent potential engine performance issues, further damage to components, and ensure safe and reliable operation of the vehicle.

10. Will fixing the Throttle Position Sensor Communication Circuit Low Voltage problem improve the overall performance of my 2016 GMC Sierra?

- Yes, resolving the underlying issue causing the P16A0 code should help restore proper throttle response, improve engine performance, and prevent related drivability issues in your GMC Sierra.