AutoCodes – GMC – P16A0 2014 GMC Sierra

P16A0 2014 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 2014 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 267

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

OBDII Code P16A0 2014 GMC Sierra - Throttle Position Sensor Communication Circuit Low Voltage - AutoCodes.com — P16A0 2014 GMC Sierra Code - Throttle Position Sensor Communication Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P16A0 2014 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 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 P16A0 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.

Need more information about the P16A0 2014 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 P16A0 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code P16A0 in a 2014 GMC Sierra?

The common symptoms of code P16A0 include poor acceleration, rough idling, stalling, and reduced engine performance.

2. What causes the Throttle Position Sensor Communication Circuit Low Voltage code in a 2014 GMC Sierra?

The code P16A0 in a 2014 GMC Sierra is usually triggered by a faulty throttle position sensor, damaged wiring, or a poor connection in the communication circuit.

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

To diagnose the P16A0 code, you can use an OBDII scanner to read the trouble code, perform a visual inspection of the wiring and sensor, and test the sensor's voltage and resistance.

4. Can a dirty throttle body cause code P16A0 in a 2014 GMC Sierra?

Yes, a dirty or malfunctioning throttle body can sometimes cause the Throttle Position Sensor Communication Circuit Low Voltage code to appear in a GMC Sierra.

5. What are the repair options for resolving OBDII code P16A0 in a 2014 GMC Sierra?

Repair options for code P16A0 include replacing the throttle position sensor, repairing or replacing damaged wiring, cleaning the throttle body, and ensuring all connections are secure.

6. Will driving with code P16A0 harm my 2014 GMC Sierra?

Continuing to drive with the P16A0 code may lead to further engine performance issues and potential damage over time. It's recommended to address the issue promptly.

7. How much does it typically cost to repair OBDII code P16A0 in a 2014 GMC Sierra?

The cost of repairing code P16A0 can vary depending on the exact cause of the issue. Costs may include parts, labor, and diagnostic fees, ranging from around $100 to $500 or more.

8. Can I reset the OBDII code P16A0 in my GMC Sierra without fixing the underlying issue?

While you can clear the code using an OBDII scanner, it will likely reappear if the underlying problem causing the Throttle Position Sensor Communication Circuit Low Voltage is not addressed.

9. Is it safe to continue driving my GMC Sierra with the check engine light on due to code P16A0?

It is generally not recommended to drive your GMC Sierra with the check engine light on, as it indicates a potential issue that needs attention. Continued driving may worsen the problem.

10. How long does it typically take to repair the Throttle Position Sensor Communication Circuit Low Voltage issue in a 2014 GMC Sierra?

The repair time for resolving code P16A0 can vary based on the specific cause and complexity of the repair. It may take anywhere from a few hours to a full day at a repair shop.