AutoCodes – GMC – P16A0 2015 GMC Sierra

P16A0 2015 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 2015 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 215

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

OBDII Code P16A0 2015 GMC Sierra - Throttle Position Sensor Communication Circuit Low Voltage - AutoCodes.com — P16A0 2015 GMC Sierra Code - Throttle Position Sensor Communication Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P16A0 2015 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 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 P16A0 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.

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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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P16A0 in a 2015 GMC Sierra related to the Throttle Position Sensor Communication Circuit Low Voltage?

- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and illuminated Check Engine light.

2. What are the possible causes of the Throttle Position Sensor Communication Circuit Low Voltage code (P16A0) in a 2015 GMC Sierra?

- Possible causes may include a faulty throttle position sensor, damaged wiring or connectors in the communication circuit, or issues with the engine control module (ECM).

3. How can I diagnose the Throttle Position Sensor Communication Circuit Low Voltage issue in my 2015 GMC Sierra?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, checking the throttle position sensor for proper operation, inspecting the wiring harness and connectors for damage, and testing the ECM if necessary.

4. Can I still drive my 2015 GMC Sierra with OBDII code P16A0 related to the Throttle Position Sensor Communication Circuit Low Voltage?

- It is not recommended to drive the vehicle with this issue, as it can lead to further damage and potentially unsafe driving conditions due to erratic engine performance.

5. How can I repair the Throttle Position Sensor Communication Circuit Low Voltage problem in my 2015 GMC Sierra?

- Repair options may include replacing the faulty throttle position sensor, repairing or replacing damaged wiring or connectors, or reprogramming the ECM to resolve the communication issue.

6. Will resetting the Check Engine light resolve the P16A0 code in my 2015 GMC Sierra?

- Simply resetting the Check Engine light will not fix the underlying issue causing the Throttle Position Sensor Communication Circuit Low Voltage code. Proper diagnosis and repair are necessary to resolve the problem.

7. Is it common for the Throttle Position Sensor to fail in a 2015 GMC Sierra, triggering code P16A0?

- While throttle position sensor failures are not uncommon in vehicles, they can be a potential cause of the P16A0 trouble code in a 2015 GMC Sierra, especially if other diagnostic checks point to this component.

8. Can a DIY enthusiast with automotive knowledge fix the Throttle Position Sensor Communication Circuit Low Voltage issue in a 2015 GMC Sierra?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to diagnose and repair the issue themselves. However, complex electrical issues like this may be best handled by a professional mechanic.

9. Are there any preventive measures to avoid encountering the P16A0 code related to the Throttle Position Sensor in a 2015 GMC Sierra?

- Regular maintenance, such as checking and cleaning electrical connectors, inspecting wiring for damage, and addressing any engine performance issues promptly, can help prevent the occurrence of this trouble code.

10. How long does it typically take a mechanic to repair the Throttle Position Sensor Communication Circuit Low Voltage problem in a 2015 GMC Sierra?

- The repair time can vary depending on the exact cause of the issue, but it may take a few hours to a full day for a mechanic to diagnose, repair, and test the Throttle Position Sensor Communication Circuit in a 2015 GMC Sierra.