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AutoCodes – Chevrolet – P116D 2014 Chevrolet Silverado

P116D 2014 Chevrolet Silverado Code - O2 Pump Current Control Circuit (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
P116D 2014 Chevrolet Silverado indicates O2 Pump Current Control Circuit (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 272
How popular is this code, among other codes? Low
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Table of contents Created and updated by William Orellana on Mar 24, 2024
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Code P116D 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 P116D 2014 Chevrolet Silverado - O2 Pump Current Control Circuit (NOx Sensor 1) - AutoCodes.com
P116D 2014 Chevrolet Silverado Code - O2 Pump Current Control Circuit (NOx Sensor 1)
What does this mean?

What are the Possible Causes of the DTC P116D 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 P116D 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 P116D 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 P116D 2014 Chevrolet Silverado code?

Need more information on how to fix the P116D 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 P116D 2014 Chevrolet Silverado Code

1. What does the OBDII code P116D mean on a 2014 Chevrolet Silverado?

P116D refers to an issue with the O2 Pump Current Control Circuit for NOx Sensor 1, indicating a malfunction in how the sensor controls oxygen pump current.

2. What are the common symptoms of code P116D in a 2014 Chevrolet Silverado?

Symptoms may include the check engine light turning on, reduced fuel efficiency, poor engine performance, or difficulty passing emissions tests.

3. What causes the P116D code to appear on a 2014 Chevrolet Silverado?

Common causes include a faulty NOx sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module (ECM).

4. Can a faulty NOx sensor trigger the P116D code?

Yes, a malfunctioning NOx sensor is one of the primary causes of the P116D code.

5. How do I diagnose the P116D code on my 2014 Chevrolet Silverado?

Start by inspecting the wiring and connectors to the NOx sensor for damage or corrosion, then test the sensor’s operation using a diagnostic scanner and multimeter.

6. Can I drive with a P116D code active on my 2014 Chevrolet Silverado?

It is possible to drive short distances, but prolonged driving with this code may lead to reduced fuel efficiency, increased emissions, or potential damage to the catalytic converter.

7. How is the P116D code fixed on a 2014 Chevrolet Silverado?

Repairs typically involve replacing the faulty NOx sensor, repairing or replacing damaged wiring, or reprogramming/updating the ECM if needed.

8. What tools are needed to troubleshoot the P116D code?

A diagnostic scanner, multimeter, and possibly a wiring diagram for the NOx sensor circuit are necessary for effective troubleshooting.

9. How much does it cost to fix the P116D code on a 2014 Chevrolet Silverado?

Repair costs vary but often include around $300-$700 for parts and labor when replacing the NOx sensor or addressing wiring issues.

10. Can a software update resolve the P116D code on a 2014 Chevrolet Silverado?

In some cases, an ECM software update from the dealership may resolve the issue if it’s related to programming errors.

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