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AutoCodes – Chevrolet – P116F 2014 Chevrolet Silverado

P116F 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado 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.
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Code Popularity 309
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
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Code P116F 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1) - AutoCodes.com
P116F 2014 Chevrolet Silverado Code - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)
What does this mean?

What are the Possible Causes of the DTC P116F 2014 Chevrolet Silverado?

  • 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 2014 Chevrolet Silverado?

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 2014 Chevrolet Silverado 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 2014 Chevrolet Silverado code?

Need more information on how to fix the P116F 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the 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 P116F 2014 Chevrolet Silverado Code

1. What does the OBDII code P116F mean on a 2014 Chevrolet Silverado?

The code P116F indicates a high voltage issue in the O2 Pump Current Control Circuit for NOx Sensor 1, which monitors and helps control nitrogen oxide emissions.

2. What are common symptoms of the P116F code in a Chevy Silverado?

Symptoms include the check engine light turning on, reduced fuel efficiency, poor engine performance, and possible diesel exhaust fluid (DEF) system warnings if equipped.

3. What causes the P116F code to appear?

Common causes include a faulty NOx sensor, damaged wiring in the sensor circuit, poor electrical connections, or a malfunctioning engine control module (ECM).

4. Can I drive my 2014 Chevy Silverado with the P116F code?

While the truck may remain drivable, ignoring the code can lead to increased emissions, reduced performance, and potential damage to the emission system.

5. How do you diagnose the P116F code on a Silverado?

Diagnosis typically involves using a scan tool to confirm the code, inspecting the NOx sensor wiring and connectors for damage, and testing the sensor for proper function.

6. How much does it cost to fix the P116F code?

Repair costs vary but typically range from $300 to $1,000 depending on whether the NOx sensor needs replacement or if there’s wiring damage that requires repair.

7. Can a faulty NOx sensor trigger other codes in my Silverado?

Yes, a faulty NOx sensor can trigger related codes such as P2202, P2203, or P11DC, all of which pertain to emissions system issues.

8. How can I prevent the P116F code from recurring?

Regularly inspect and maintain the NOx sensor and wiring, keep the exhaust system in good condition, and address any check engine light promptly.

9. Is it possible to fix the P116F code without replacing the NOx sensor?

Yes, if the issue is caused by damaged wiring or poor connections, repairs can resolve the code without replacing the sensor.

10. Do I need to reset the ECU after fixing the P116F code?

Yes, after repairs, the ECU should be reset using a scan tool to clear the code and verify that the issue has been resolved.

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