AutoCodes.com
Login with Google
AutoCodes – Chevrolet – P116E 2016 Chevrolet Silverado

P116E 2016 Chevrolet Silverado Code - O2 Pump Current Control Circuit Low 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
P116E 2016 Chevrolet Silverado indicates O2 Pump Current Control Circuit Low 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 257
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 P116E 2016 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 P116E 2016 Chevrolet Silverado - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1) - AutoCodes.com
P116E 2016 Chevrolet Silverado Code - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)
What does this mean?

What are the Possible Causes of the DTC P116E 2016 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 P116E 2016 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 P116E 2016 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 P116E 2016 Chevrolet Silverado code?

Need more information on how to fix the P116E 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P116E 2016 Chevrolet Silverado 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 P116E 2016 Chevrolet Silverado Code

What does the OBDII code P116E mean on a 2016 Chevrolet Silverado?

The P116E code indicates a problem with the O2 Pump Current Control Circuit for NOx Sensor 1, specifically low voltage being detected.

What are the common symptoms of code P116E in a 2016 Chevrolet Silverado?

Common symptoms include the check engine light turning on, reduced fuel efficiency, poor engine performance, and possibly increased emissions.

What causes the P116E code to appear in a 2016 Chevrolet Silverado?

Possible causes include a faulty NOx sensor, wiring issues such as damaged or corroded connections, a malfunctioning control module, or exhaust system issues.

Can a bad NOx sensor trigger the P116E code?

Yes, a defective or failing NOx sensor can trigger the P116E code by failing to properly regulate or monitor the O2 pump current.

How do you diagnose the P116E code on a 2016 Chevrolet Silverado?

Diagnosis involves using an OBDII scan tool to confirm the code, inspecting the NOx sensor and its wiring for damage, and testing the sensor's electrical circuit for low voltage.

Is the P116E code serious, and can I drive with it?

The P116E code should be addressed promptly as it can affect engine performance and emissions. Driving for an extended period with this issue may cause further damage.

How do you fix the P116E code on a 2016 Chevrolet Silverado?

Repairs may involve replacing the NOx sensor, repairing or replacing damaged wiring, cleaning corroded connections, or reprogramming the control module if needed.

What tools are needed to repair the P116E code on a 2016 Chevrolet Silverado?

You’ll need an OBDII scan tool, a multimeter for electrical testing, and potentially tools for replacing the NOx sensor or repairing wiring.

How much does it cost to fix the P116E code on a 2016 Chevrolet Silverado?

The cost can vary widely depending on the issue, with NOx sensor replacement typically costing $200–$500, plus labor if done by a mechanic.

Can a software update resolve the P116E code on a 2016 Chevrolet Silverado?

In some cases, a software update for the engine control module (ECM) may resolve the issue, but this depends on the specific cause of the code.

Discuss the causes and fixes for P116E 2016 Chevrolet Silverado OBDII Code

Submit a New Comment

Code P116E 2016 Chevrolet Silverado 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