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Engine-Codes – GMC – P16A0 2014 GMC Sierra

P16A0 2014 GMC Sierra Code - Throttle Position Sensor Communication Circuit Low Voltage

Quick Answer

The P16A0 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a Throttle Position Sensor (TPS) Communication Circuit Low Voltage. Common causes include Faulty throttle position sensor, Damaged or corroded wiring in the TPS communication circuit, ECM software or hardware issues. 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 position sensor, Damaged or corroded wiring in the TPS communication circuit, ECM software or hardware issues.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code P16A0 2014 GMC Sierra Description

The P16A0 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a Throttle Position Sensor (TPS) Communication Circuit Low Voltage. The TPS is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). When the ECM detects a low voltage signal from the TPS communication circuit, it triggers the P16A0 code.

OBDII Code P16A0 2014 GMC Sierra - Throttle Position Sensor Communication Circuit Low Voltage
P16A0 2014 GMC Sierra Code - Throttle Position Sensor Communication Circuit Low Voltage

Common Causes of P16A0 2014 GMC Sierra

  1. Faulty throttle position sensor.
  2. Damaged or corroded wiring in the TPS communication circuit.
  3. ECM software or hardware issues.
  4. Loose or poor electrical connections.
  5. Environmental factors such as moisture or debris affecting sensor performance.

Symptoms of P16A0 2014 GMC Sierra

  1. Poor acceleration or hesitation when pressing the throttle pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Reduced fuel efficiency and increased emissions.
  4. Check Engine Light illuminated on the dashboard.
  5. Limited engine power or limp mode activation.

How to Fix P16A0 2014 GMC Sierra

  1. Begin by conducting a thorough inspection of the TPS wiring harness and connectors for any signs of damage or corrosion.
  2. Test the TPS sensor using a multimeter to check for proper voltage output.
  3. If the TPS sensor is faulty, replace it with a new one following manufacturer's guidelines.
  4. Clear the DTC from the ECM memory using a diagnostic scan tool.
  5. Perform a road test to ensure the issue has been resolved and that the vehicle operates smoothly.

Cost to Fix P16A0 2014 GMC Sierra

The typical repair costs for addressing a Throttle Position Sensor Communication Circuit Low Voltage issue can vary depending on the specific cause of the problem and the cost of parts and labor. In general, replacing a faulty TPS sensor can range from $50 to $200, while diagnostic and labor costs may add an additional $100 to $300. Overall, the total repair cost could fall between $150 and $500. It's important to note that these estimates are approximate, and actual costs may differ based on individual circumstances and service provider rates. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost assessment.

What does this mean?

Tech Notes for P16A0 2014 GMC Sierra









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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.

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