AutoCodes – Chevrolet – P11BE 2014 Chevrolet Silverado

P11BE 2014 Chevrolet Silverado Code - O2 Reference Voltage 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: P11BE 2014 Chevrolet Silverado indicates O2 Reference Voltage 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 267

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 P11BE 2014 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 P11BE 2014 Chevrolet Silverado - O2 Reference Voltage Circuit (NOx Sensor 2) - AutoCodes.com — P11BE 2014 Chevrolet Silverado Code - O2 Reference Voltage Circuit (NOx Sensor 2)

What does this mean?

What are the Possible Causes of the DTC P11BE 2014 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 P11BE 2014 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 P11BE 2014 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 P11BE 2014 Chevrolet Silverado code?

Need more information on how to fix the P11BE 2014 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 P11BE 2014 Chevrolet Silverado Code

1. What does OBDII code P11BE on a 2014 Chevrolet Silverado indicate?

The P11BE code specifically relates to the O2 reference voltage circuit for NOx sensor 2 in a 2014 Chevrolet Silverado.

2. What are the common symptoms of OBDII code P11BE in a 2014 Chevrolet Silverado?

Common symptoms of code P11BE may include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

3. What are the possible causes of OBDII code P11BE in a 2014 Chevrolet Silverado?

Possible causes of code P11BE can include a faulty NOx sensor, damaged wiring or connectors in the O2 reference voltage circuit, or issues with the engine control module.

4. How can I diagnose OBDII code P11BE in my 2014 Chevrolet Silverado?

Diagnosing code P11BE may require using an OBDII scanner to retrieve the specific fault code, checking the wiring and connectors related to the NOx sensor, and testing the sensor's functionality.

5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P11BE?

It is not recommended to continue driving with an unresolved P11BE code, as it can lead to further damage to the vehicle and potentially affect emissions compliance.

6. How can I repair OBDII code P11BE on my 2014 Chevrolet Silverado?

Repairing code P11BE may involve replacing the faulty NOx sensor, repairing or replacing damaged wiring or connectors, and clearing the error code with an OBDII scanner.

7. Is it possible to reset OBDII code P11BE in a 2014 Chevrolet Silverado without fixing the underlying issue?

While you can clear the error code temporarily, it will likely reappear if the root cause of the problem, such as a malfunctioning NOx sensor, is not addressed.

8. Are there any maintenance tips to prevent OBDII code P11BE in a 2014 Chevrolet Silverado?

Regularly inspecting and maintaining the NOx sensor, as well as ensuring the integrity of the wiring and connectors in the O2 reference voltage circuit, can help prevent code P11BE from occurring.

9. Can a DIY enthusiast with basic automotive skills fix OBDII code P11BE in a 2014 Chevrolet Silverado?

Depending on the exact cause of the code, a DIY enthusiast with some automotive knowledge may be able to address issues like replacing the NOx sensor or repairing simple wiring problems associated with code P11BE.

10. How much can I expect to spend on repairing OBDII code P11BE in my 2014 Chevrolet Silverado?

The cost of repairing code P11BE can vary depending on the specific issue, but it may involve expenses for parts such as a new NOx sensor, as well as potential labor costs if professional assistance is required.