AutoCodes.com
Login with Google
AutoCodes – GMC – P116F 2016 GMC Sierra

P116F 2016 GMC Sierra Code - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)

Quick Answer

The Nitrogen Oxides (NOx) sensors are part of the selective catalytic reduction system, a device used to reduce NOx emission on diesel engines. Common causes include Faulty Nitrogen Oxides (NOx) Sensor, Nitrogen Oxides Sensor harness is open or shorted, Nitrogen Oxides Sensor 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
P116F 2016 GMC Sierra indicates O2 Pump Current Control Circuit High Voltage (NOx Sensor 1).
Common causes
Common causes include Faulty Nitrogen Oxides (NOx) Sensor, Nitrogen Oxides Sensor harness is open or shorted, Nitrogen Oxides Sensor 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.
Save to My Repairs My Repairs
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 175
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Mar 24, 2024
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P116F 2016 GMC Sierra Description

The Nitrogen Oxides (NOx) sensors are part of the selective catalytic reduction system, a device used to reduce NOx emission on diesel engines. There are two NOx sensors, one placed upstream of selective catalytic reduction, to measure inlet NOx concentration, and one placed downstream. They are connected with the control module via CAN and all the information is exchanged through it. Since it is a smart sensor, all the electrical monitoring is performed inside the sensor and only the results are sent to the Engine Control Module (ECM). Each NOx sensor contains a sensing cell, a pumping cell, and a heater. A sample of exhaust gas passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit within sensor controls the pump current through the pumping cell in order to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the concentration of NOx in the exhaust. The ECM varies the amount of diesel exhaust fluid (reductant) added by varying the reductant injector duty cycle in response to changes in engine exhaust NOx levels. The smart NOx sensors consist of two components, the NOx module and the NOx sensor element that are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM over the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module. The Diagnostic Trouble Code (DTC) will be set if the ECM software detects a fault in the NOx sensor circuitry or a performance fault in the NOx sensor for greater than 2 s.
OBDII Code P116F 2016 GMC Sierra - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1) - AutoCodes.com
P116F 2016 GMC Sierra Code - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)
What does this mean?

What are the Possible Causes of the DTC P116F 2016 GMC Sierra?

  • Faulty Nitrogen Oxides (NOx) Sensor
  • Nitrogen Oxides Sensor harness is open or shorted
  • Nitrogen Oxides Sensor circuit poor electrical connection

How to Fix the DTC P116F 2016 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P116F 2016 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 P116F 2016 GMC Sierra code?

Need more information on how to fix the P116F 2016 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P116F 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P116F 2016 GMC Sierra Code

1. What does the OBDII code P116F mean on a 2016 GMC Sierra?

The code P116F indicates "O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)," meaning there's an issue with the current control circuit in the NOx sensor's oxygen pump.

2. What are the common symptoms of code P116F on a 2016 GMC Sierra?

Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, and potential limp mode activation.

3. What causes code P116F to appear on a 2016 GMC Sierra?

Common causes include a faulty NOx sensor, damaged wiring or electrical connections, a malfunctioning control module, or excessive buildup on the sensor.

4. Can I drive my 2016 GMC Sierra with a P116F code?

While the vehicle may still be drivable, it's not recommended as prolonged operation can lead to further damage or increased emissions.

5. How do I diagnose a P116F code on a 2016 GMC Sierra?

Diagnosis involves using an OBDII scanner to confirm the code, inspecting the NOx sensor and its wiring for damage, and testing the sensor's voltage and resistance.

6. How is a P116F code fixed on a 2016 GMC Sierra?

Repairs may include replacing the NOx sensor, repairing or replacing damaged wiring, and updating or reprogramming the vehicle's ECM if required.

7. How much does it cost to repair a P116F code on a 2016 GMC Sierra?

Repair costs can vary but typically range from $300 to $900, depending on whether the NOx sensor or wiring needs replacement.

8. Can a dirty NOx sensor cause a P116F code on a 2016 GMC Sierra?

Yes, a dirty or contaminated NOx sensor can cause inaccurate readings and trigger this code.

9. Is the P116F code related to emissions on a 2016 GMC Sierra?

Yes, the P116F code is tied to emissions as it involves the NOx sensor, which monitors nitrogen oxide levels to ensure proper emissions control.

10. Will clearing the P116F code fix the problem on a 2016 GMC Sierra?

Clearing the code may turn off the check engine light temporarily, but the underlying issue must be addressed to prevent the code from returning.

Discuss the causes and fixes for P116F 2016 GMC Sierra OBDII Code

Submit a New Comment

Code P116F 2016 GMC Sierra comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play