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AutoCodes – Chevrolet – P116E 2015 Chevrolet Silverado

P116E 2015 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 2015 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.
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Code Popularity 203
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 P116E 2015 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 2015 Chevrolet Silverado - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1) - AutoCodes.com
P116E 2015 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 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P116E 2015 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 P116E 2015 Chevrolet Silverado Code

What does OBDII code P116E mean for a 2015 Chevrolet Silverado?

P116E indicates "O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)," meaning there’s an issue with the oxygen pump circuit in the NOx sensor.

What are the symptoms of code P116E in a 2015 Chevrolet Silverado?

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

What causes code P116E in a 2015 Chevrolet Silverado?

Possible causes include a faulty NOx sensor, damaged wiring or connectors, or issues with the vehicle's ECU.

Can driving with code P116E damage my 2015 Chevrolet Silverado?

Driving with this code may lead to increased emissions and reduced fuel efficiency, but it typically won’t cause immediate damage. Addressing it promptly is recommended.

How do you diagnose code P116E in a 2015 Chevrolet Silverado?

Diagnosis involves scanning the vehicle with an OBDII tool, inspecting the NOx sensor and wiring, and checking for related issues in the exhaust system.

Can I fix code P116E myself on a 2015 Chevrolet Silverado?

If you’re experienced with car repairs, you may be able to check connections or replace the NOx sensor. Otherwise, professional assistance is recommended.

How much does it cost to repair code P116E on a 2015 Chevrolet Silverado?

Repair costs vary but typically range from $300 to $600, depending on whether the NOx sensor or wiring needs replacement.

Is code P116E related to the emissions system?

Yes, P116E is directly related to the emissions system, as the NOx sensor monitors and helps control exhaust emissions.

Can a bad NOx sensor trigger code P116E?

Yes, a malfunctioning or damaged NOx sensor is one of the most common reasons for this code.

What tools do I need to repair code P116E on a 2015 Chevrolet Silverado?

You’ll need an OBDII scanner, basic hand tools, and potentially a replacement NOx sensor or wiring harness.

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