AutoCodes – Chevrolet – P116F Chevrolet

P116F Chevrolet 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 Chevrolet 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 798

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 29, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P116F Chevrolet 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 Chevrolet - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1) - AutoCodes.com — P116F Chevrolet Code - O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)

What does this mean?

What are the Possible Causes of the DTC P116F Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

Get the P116F Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P116F 2014 Chevrolet Silverado — O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)
P116F 2015 Chevrolet Silverado — O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)
P116F 2016 Chevrolet Silverado — O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)
P116F 2017 Chevrolet Silverado — O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)
P116F 2018 Chevrolet Silverado — O2 Pump Current Control Circuit High Voltage (NOx Sensor 1)

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 Chevrolet Code

1. What are the common symptoms of OBDII code P116F in a Chevrolet vehicle?

The common symptoms of OBDII code P116F (O2 Pump Current Control Circuit High Voltage - NOx Sensor 1) in a Chevrolet include reduced engine performance, rough idling, and decreased fuel efficiency.

2. What are the possible causes of OBDII code P116F in a Chevrolet?

Possible causes of OBDII code P116F in a Chevrolet may include a faulty NOx sensor 1, issues with the O2 pump current control circuit, damaged wiring or connectors, or a malfunctioning PCM (powertrain control module).

3. How can I diagnose OBDII code P116F in my Chevrolet?

Diagnosing OBDII code P116F in your Chevrolet typically involves using an OBDII scanner to retrieve the trouble codes, inspecting the NOx sensor 1 and its wiring, checking the O2 pump current control circuit, and testing the PCM for proper functionality.

4. Can I drive my Chevrolet with OBDII code P116F?

It is not recommended to drive your Chevrolet with OBDII code P116F present, as it can lead to further engine damage and potentially cause safety issues. It is best to address the underlying problem promptly.

5. How can I repair OBDII code P116F in my Chevrolet?

Repairing OBDII code P116F in your Chevrolet may involve replacing the faulty NOx sensor 1, repairing or replacing damaged wiring or connectors, addressing issues with the O2 pump current control circuit, or reprogramming the PCM.

6. Is it safe to ignore OBDII code P116F in my Chevrolet?

Ignoring OBDII code P116F in your Chevrolet is not recommended, as it can affect the vehicle's performance and fuel efficiency. It is best to have the issue diagnosed and repaired as soon as possible.

7. Can a DIY enthusiast fix OBDII code P116F in a Chevrolet?

A DIY enthusiast with appropriate knowledge and tools may be able to address OBDII code P116F in a Chevrolet, especially if they are experienced with automotive electrical systems. However, professional help is recommended for accurate diagnosis and repair.

8. How much does it cost to repair OBDII code P116F in a Chevrolet?

The cost to repair OBDII code P116F in a Chevrolet can vary depending on the specific cause of the issue, labor rates in your area, and whether genuine or aftermarket parts are used. It is advisable to obtain quotes from reputable mechanics or dealerships.

9. Will OBDII code P116F cause my Chevrolet to fail an emissions test?

OBDII code P116F, related to the O2 pump current control circuit high voltage in the NOx sensor 1 of a Chevrolet, can potentially cause the vehicle to fail an emissions test due to increased emissions and poor performance. It is important to address the issue before undergoing an emissions test.

10. How often does OBDII code P116F occur in Chevrolet vehicles?

OBDII code P116F related to the O2 pump current control circuit high voltage in the NOx sensor 1 is a relatively uncommon issue in Chevrolet vehicles. However, if it does occur, prompt diagnosis and repair are necessary to ensure optimal vehicle performance.