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P11D5 2016 Chevrolet Silverado Code - NOx Sensor 2 Exceeded Minimum Learning Limit

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: P11D5 2016 Chevrolet Silverado indicates NOx Sensor 2 Exceeded Minimum Learning Limit.
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 228

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 P11D5 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 P11D5 2016 Chevrolet Silverado - NOx Sensor 2 Exceeded Minimum Learning Limit - AutoCodes.com — P11D5 2016 Chevrolet Silverado Code - NOx Sensor 2 Exceeded Minimum Learning Limit

What does this mean?

What are the Possible Causes of the DTC P11D5 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 P11D5 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 P11D5 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 P11D5 2016 Chevrolet Silverado code?

Need more information on how to fix the P11D5 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P11D5 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 P11D5 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P11D5 on a 2016 Chevrolet Silverado?

The common symptoms of code P11D5 on a 2016 Chevrolet Silverado include poor engine performance, reduced fuel efficiency, and illuminated Check Engine Light.

2. What does the OBDII code P11D5 indicating "NOx Sensor 2 Exceeded Minimum Learning Limit" mean on a 2016 Chevrolet Silverado?

The code P11D5 on a 2016 Chevrolet Silverado suggests that the NOx Sensor 2 has detected that the minimum learning limit has been exceeded, indicating potential issues with the sensor's performance.

3. What are the possible causes of OBDII code P11D5 on a 2016 Chevrolet Silverado?

Potential causes of code P11D5 on a 2016 Chevrolet Silverado include a faulty NOx Sensor 2, wiring or connector issues, exhaust system leaks, or a malfunctioning engine control module (ECM).

4. How do you diagnose OBDII code P11D5 on a 2016 Chevrolet Silverado?

Diagnosing code P11D5 on a 2016 Chevrolet Silverado typically involves inspecting the NOx Sensor 2, checking the wiring and connectors for any damage, examining the exhaust system for leaks, and using a diagnostic scanner to retrieve and analyze the fault codes.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P11D5 present?

It is not recommended to drive your 2016 Chevrolet Silverado with code P11D5 present, as it can lead to further damage to the exhaust system and reduce engine efficiency. It is advisable to address the issue promptly.

6. How can I repair OBDII code P11D5 on a 2016 Chevrolet Silverado?

Repairing code P11D5 on a 2016 Chevrolet Silverado may involve replacing the NOx Sensor 2, repairing any wiring or connector issues, fixing exhaust leaks, or reprogramming the engine control module (ECM) if necessary.

7. Is it possible to reset OBDII code P11D5 on a 2016 Chevrolet Silverado without fixing the underlying issue?

Resetting code P11D5 on a 2016 Chevrolet Silverado without addressing the root cause may temporarily clear the code, but it is likely to reappear once the issue persists. It is essential to diagnose and repair the problem to prevent future occurrences.

8. How much does it cost to fix OBDII code P11D5 on a 2016 Chevrolet Silverado?

The cost of fixing code P11D5 on a 2016 Chevrolet Silverado can vary depending on the specific issue, parts needed, and labor costs. It is recommended to consult a mechanic or dealership for an accurate estimate.

9. Can a DIY enthusiast repair OBDII code P11D5 on a 2016 Chevrolet Silverado?

While some aspects of diagnosing and repairing code P11D5 on a 2016 Chevrolet Silverado may be tackled by experienced DIY enthusiasts, dealing with sensors and electrical components may require specialized tools and expertise. It is advisable to seek professional help if unsure.

10. How often does OBDII code P11D5 occur in a 2016 Chevrolet Silverado?

The occurrence of code P11D5 on a 2016 Chevrolet Silverado can vary depending on driving conditions, maintenance history, and the vehicle's overall health. If the code appears, it should be addressed promptly to avoid potential issues.