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Engine-Codes – GMC – P116E 2014 GMC Sierra

P116E 2014 GMC Sierra Code - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)

Quick Answer

The P116E code for a 2014 GMC Sierra indicates an issue with the O2 Pump Current Control Circuit Low Voltage, specifically related to the NOx Sensor 1. Common causes include Faulty NOx Sensor: A malfunctioning or failed NOx sensor can trigger this code, Wiring Issues: Damaged or corroded wiring connected to the O2 pump current control circuit can cause low voltage, ECM Malfunction: A problem with the engine control module (ECM) can disrupt the communication between the NOx sensor and the O2 pump current control circuit. 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
P116E 2014 GMC Sierra indicates O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1).
Common causes
Common causes include Faulty NOx Sensor: A malfunctioning or failed NOx sensor can trigger this code, Wiring Issues: Damaged or corroded wiring connected to the O2 pump current control circuit can cause low voltage, ECM Malfunction: A problem with the engine control module (ECM) can disrupt the communication between the NOx sensor and the O2 pump current control circuit.
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 11, 2024
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Code P116E 2014 GMC Sierra Description

The P116E code for a 2014 GMC Sierra indicates an issue with the O2 Pump Current Control Circuit Low Voltage, specifically related to the NOx Sensor 1. This code is typically associated with the vehicle's emissions system, specifically the NOx (nitrogen oxide) sensor, which is responsible for monitoring and controlling the levels of nitrogen oxide emissions produced by the vehicle. When the O2 Pump Current Control Circuit experiences low voltage, it means that there is a problem with the signal being sent to the NOx sensor, which can lead to inaccurate readings and potential issues with emissions control.

OBDII Code P116E 2014 GMC Sierra - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)
P116E 2014 GMC Sierra Code - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)

Common Causes of P116E 2014 GMC Sierra

  1. Faulty NOx Sensor: A malfunctioning or failed NOx sensor can trigger this code.
  2. Wiring Issues: Damaged or corroded wiring connected to the O2 pump current control circuit can cause low voltage.
  3. ECM Malfunction: A problem with the engine control module (ECM) can disrupt the communication between the NOx sensor and the O2 pump current control circuit.
  4. O2 Pump Current Control Circuit Malfunction: A malfunction within the O2 pump current control circuit itself can lead to low voltage readings.

Symptoms of P116E 2014 GMC Sierra

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: Drivers may notice a decrease in fuel efficiency as a result of the engine not operating at peak performance.
  3. Rough Idling: The engine may idle roughly or inconsistently due to the issue affecting the O2 pump current control circuit.
  4. Failed Emissions Test: If the NOx sensor is not functioning correctly, the vehicle may fail emissions tests due to inaccurate readings.

How to Fix P116E 2014 GMC Sierra

  1. Diagnose the Issue: Use a diagnostic tool to retrieve the specific error code and identify the root cause of the problem.
  2. Check Wiring: Inspect the wiring connected to the O2 pump current control circuit for any damage or corrosion and repair or replace as necessary.
  3. Test NOx Sensor: Test the NOx sensor to determine if it is functioning correctly and replace if needed.
  4. Repair O2 Pump Current Control Circuit: If the issue lies with the O2 pump current control circuit, repair or replace the faulty component to restore proper voltage levels.
  5. Clear Error Codes: After completing the repairs, clear the error codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P116E 2014 GMC Sierra

The cost estimate for resolving a P116E code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the parts and labor required for repair. In general, the repair costs for this type of issue can range from $200 to $600, including parts and labor. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's advisable to check with local auto repair shops to get a more accurate estimate based on your specific situation.

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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 P116E 2014 GMC Sierra Code

1. What does the OBDII code P116E mean on a 2014 GMC Sierra?

The P116E code indicates a problem with the O2 Pump Current Control Circuit Low Voltage for NOx Sensor 1, meaning the sensor is detecting lower voltage than expected.

2. What are the symptoms of code P116E in a 2014 GMC Sierra?

Common symptoms include reduced engine performance, increased fuel consumption, illuminated check engine light, and possible emission test failure.

3. What causes the P116E code to appear on my GMC Sierra?

Potential causes include a faulty NOx sensor, damaged wiring or connectors, issues with the sensor's pump circuit, or a malfunctioning powertrain control module (PCM).

4. Can I drive my 2014 GMC Sierra with a P116E code?

While the vehicle may still be drivable, it’s not recommended as it can lead to increased emissions, reduced fuel efficiency, and potential damage to other components.

5. How do I diagnose the P116E code on a 2014 GMC Sierra?

Diagnosis involves using a scan tool to confirm the code, inspecting the wiring and connectors for damage or corrosion, and testing the NOx sensor's pump circuit for proper operation.

6. How do I fix the P116E code on my 2014 GMC Sierra?

Repairs may include replacing the NOx sensor, repairing or replacing damaged wiring or connectors, or reprogramming/updating the PCM if necessary.

7. What is the role of NOx Sensor 1 in my GMC Sierra?

NOx Sensor 1 measures nitrogen oxide levels in the exhaust to help optimize emissions control and ensure compliance with environmental regulations.

8. How much does it cost to fix the P116E code on a 2014 GMC Sierra?

The cost can vary but typically ranges from $300 to $800, depending on whether the issue is with the NOx sensor, wiring, or PCM.

9. Can a bad NOx sensor trigger other codes along with P116E?

Yes, a faulty NOx sensor can trigger related codes such as P2200 or P2202, which indicate issues with the sensor’s performance or signal.

10. How can I prevent the P116E code from reappearing?

Regular maintenance, including inspecting the exhaust system and wiring, as well as using high-quality fuel, can help prevent future issues with the NOx sensor.

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