AutoCodes – GMC – P116E 2017 GMC Sierra

P116E 2017 GMC Sierra 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 2017 GMC Sierra 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 160

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 24, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P116E 2017 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 P116E 2017 GMC Sierra - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1) - AutoCodes.com — P116E 2017 GMC Sierra Code - O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1)

What does this mean?

What are the Possible Causes of the DTC P116E 2017 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 P116E 2017 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 P116E 2017 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 P116E 2017 GMC Sierra code?

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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 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P116E in a 2017 GMC Sierra?

- Common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What can cause the O2 Pump Current Control Circuit Low Voltage (NOx Sensor 1) code in a 2017 GMC Sierra?

- Possible causes may include a faulty NOx sensor, issues with the O2 pump current control circuit, wiring problems, or a malfunctioning ECM.

3. How serious is the P116E OBDII code in a 2017 GMC Sierra?

- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the engine and emissions system.

4. How can I diagnose the O2 Pump Current Control Circuit Low Voltage code in my 2017 GMC Sierra?

- Diagnosing this code often requires using an OBDII scanner to retrieve the specific fault codes, followed by inspecting the NOx sensor, wiring, and related components for any visible damage.

5. Can I still drive my 2017 GMC Sierra with the P116E code?

- It is generally not recommended to drive the vehicle extensively with this code present, as it may lead to further issues and potential damage if left unresolved.

6. What are some repair tips for addressing the O2 Pump Current Control Circuit Low Voltage fault in a 2017 GMC Sierra?

- Repair tips may include checking and repairing any damaged wiring, replacing the NOx sensor if faulty, and ensuring proper connections and grounds in the circuit.

7. How much does it cost to fix the P116E code in a 2017 GMC Sierra?

- The cost of fixing this code can vary depending on the exact cause of the issue, but it may involve expenses for parts replacement, labor, and diagnostic services.

8. Can a DIY enthusiast fix the O2 Pump Current Control Circuit Low Voltage code in a 2017 GMC Sierra?

- While some minor repairs and inspections can be done by DIY enthusiasts, diagnosing and fixing complex issues related to this code may require professional expertise and specialized tools.

9. Will resetting the check engine light resolve the P116E code in my 2017 GMC Sierra?

- Simply resetting the check engine light will not fix the underlying issue causing the code. It is important to diagnose and address the root cause to prevent the code from reoccurring.

10. How often does the OBDII code P116E occur in a 2017 GMC Sierra?

- The frequency of this specific code can vary, but it is relatively common in vehicles with emissions control systems like the 2017 GMC Sierra.