AutoCodes – Chevrolet – P11D0 2016 Chevrolet Silverado

P11D0 2016 Chevrolet Silverado Code - O2 Signal Circuit (NOx Sensor 2)

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 2, Nitrogen Oxides Sensor 2 harness is open or shorted, Nitrogen Oxides Sensor 2 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: P11D0 2016 Chevrolet Silverado indicates O2 Signal Circuit (NOx Sensor 2).
Common causes: Common causes include Faulty Nitrogen Oxides (NOx) Sensor 2, Nitrogen Oxides Sensor 2 harness is open or shorted, Nitrogen Oxides Sensor 2 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 285

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 P11D0 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 the 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 P11D0 2016 Chevrolet Silverado - O2 Signal Circuit (NOx Sensor 2) - AutoCodes.com — P11D0 2016 Chevrolet Silverado Code - O2 Signal Circuit (NOx Sensor 2)

What does this mean?

What are the Possible Causes of the DTC P11D0 2016 Chevrolet Silverado?

Faulty Nitrogen Oxides (NOx) Sensor 2
Nitrogen Oxides Sensor 2 harness is open or shorted
Nitrogen Oxides Sensor 2 circuit poor electrical connection

How to Fix the DTC P11D0 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 P11D0 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 P11D0 2016 Chevrolet Silverado code?

Need more information on how to fix the P11D0 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P11D0 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 P11D0 2016 Chevrolet Silverado Code

Q: What are the common symptoms of OBDII code P11D0 in a 2016 Chevrolet Silverado?

A: Common symptoms include poor fuel efficiency, rough engine performance, and an illuminated Check Engine light.

Q: What does the OBDII code P11D0 in a 2016 Chevrolet Silverado indicate?

A: The code P11D0 specifically refers to a malfunction in the O2 signal circuit of NOx Sensor 2.

Q: What are the possible causes of OBDII code P11D0 in a 2016 Chevrolet Silverado?

A: The code P11D0 can be triggered by issues such as a faulty NOx sensor, damaged wiring, or a problem with the vehicle's ECM.

Q: How can I diagnose the O2 signal circuit issue related to OBDII code P11D0 in a 2016 Chevrolet Silverado?

A: Diagnosing this problem typically involves using a scan tool to check for specific sensor readings and conducting a thorough inspection of the sensor and its wiring.

Q: Can a bad NOx sensor cause the OBDII code P11D0 in a 2016 Chevrolet Silverado?

A: Yes, a malfunctioning NOx sensor, particularly Sensor 2, can trigger the P11D0 code due to inaccurate readings being sent to the ECM.

Q: Is it safe to continue driving my 2016 Chevrolet Silverado with the OBDII code P11D0 present?

A: It is not recommended to continue driving with the P11D0 code as it can lead to reduced fuel efficiency and potential damage to the vehicle's emissions system.

Q: How can I repair the O2 signal circuit issue causing OBDII code P11D0 in my 2016 Chevrolet Silverado?

A: Repairing the issue may involve replacing the NOx sensor, repairing damaged wiring, or reprogramming the ECM to address the signal circuit problem.

Q: Are there any specific maintenance tips to prevent the recurrence of OBDII code P11D0 in a 2016 Chevrolet Silverado?

A: Regularly inspecting the NOx sensors, ensuring proper wiring connections, and following the manufacturer's recommended maintenance schedule can help prevent the reoccurrence of the P11D0 code.

Q: Can a DIY enthusiast fix the O2 signal circuit issue causing OBDII code P11D0 in a 2016 Chevrolet Silverado?

A: While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing the specific O2 signal circuit issue related to the P11D0 code may require advanced tools and expertise best handled by a professional mechanic.

Q: How much can I expect to pay for repairing the O2 signal circuit issue related to OBDII code P11D0 in my 2016 Chevrolet Silverado?

A: The cost of repairing the O2 signal circuit issue can vary depending on the exact cause of the problem, but it may range from $200 to $600, including parts and labor.