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Engine-Codes – GMC – P16A0 2016 GMC Sierra

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

Quick Answer

The P16A0 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Throttle Position Sensor (TPS) communication circuit, specifically reporting low voltage. Common causes include Faulty Throttle Position Sensor (TPS), Damaged or corroded wiring in the TPS communication circuit, Malfunctioning Engine Control Module (ECM). 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 Position Sensor (TPS), Damaged or corroded wiring in the TPS communication circuit, Malfunctioning Engine Control Module (ECM).
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 13, 2024
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Code P16A0 2016 GMC Sierra Description

The P16A0 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Throttle Position Sensor (TPS) communication circuit, specifically reporting 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). The ECM uses this data to adjust the air-fuel mixture and control the engine's performance.

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

Common Causes of P16A0 2016 GMC Sierra

  1. Faulty Throttle Position Sensor (TPS).
  2. Damaged or corroded wiring in the TPS communication circuit.
  3. Malfunctioning Engine Control Module (ECM).
  4. Poor electrical connections or grounds.
  5. Environmental factors such as moisture or debris affecting sensor operation.

Symptoms of P16A0 2016 GMC Sierra

  1. Poor acceleration or hesitation when pressing the gas pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Reduced fuel efficiency and increased fuel consumption.
  4. Illumination of the check engine light on the dashboard.
  5. Vehicle going into limp mode, limiting speed and power.

How to Fix P16A0 2016 GMC Sierra

  1. Begin by conducting a thorough inspection of the TPS wiring and connections to check for any visible damage or corrosion.
  2. Test the Throttle Position Sensor using a multimeter to ensure it is functioning within the manufacturer's specified parameters.
  3. Check the ECM for any signs of malfunction and perform a diagnostic scan to identify any related error codes.
  4. Replace the TPS if it is found to be faulty, ensuring proper installation and calibration.
  5. Clear the DTC codes from the ECM memory and perform a test drive to verify that the issue has been resolved.

Cost to Fix P16A0 2016 GMC Sierra

The typical repair costs for addressing a P16A0 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty Throttle Position Sensor can cost between $100 and $200, while labor charges may range from $80 to $150 per hour. Additional costs for diagnostic testing, parts, and potential ECM replacement should also be factored into the overall estimate. It is advisable to consult with a reputable auto repair shop for a more accurate cost assessment based on the vehicle's condition and the extent of the repairs needed.

What does this mean?

Tech Notes for P16A0 2016 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 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.

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