AutoCodes – Chevrolet – P11DA 2014 Chevrolet Silverado

P11DA 2014 Chevrolet Silverado Code - O2 Pump Current Control Circuit High Voltage (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: P11DA 2014 Chevrolet Silverado indicates O2 Pump Current Control Circuit High Voltage (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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 317

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P11DA 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 P11DA 2014 Chevrolet Silverado - O2 Pump Current Control Circuit High Voltage (NOx Sensor 2) - AutoCodes.com — P11DA 2014 Chevrolet Silverado Code - O2 Pump Current Control Circuit High Voltage (NOx Sensor 2)

What does this mean?

What are the Possible Causes of the DTC P11DA 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 P11DA 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 P11DA 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 P11DA 2014 Chevrolet Silverado code?

Need more information on how to fix the P11DA 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P11DA 2014 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 P11DA 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P11DA in a 2014 Chevrolet Silverado?

- Common symptoms include the Check Engine light coming on, decreased fuel efficiency, rough idle, and potential issues with the vehicle's emissions system.

2. What does the O2 Pump Current Control Circuit High Voltage (NOx Sensor 2) error code P11DA mean in a 2014 Chevrolet Silverado?

- This code indicates a high voltage condition in the O2 pump current control circuit for NOx sensor 2, which is related to the vehicle's emissions control system.

3. What are the possible causes of OBDII code P11DA in a 2014 Chevrolet Silverado?

- Possible causes include a faulty NOx sensor, damaged wiring or connectors in the O2 pump current control circuit, a malfunctioning PCM, or issues with the vehicle's exhaust system.

4. How serious is the O2 Pump Current Control Circuit High Voltage (NOx Sensor 2) code P11DA in a 2014 Chevrolet Silverado?

- While the vehicle may still be operable with this code, it can lead to increased emissions, decreased fuel efficiency, and potential long-term damage to the emissions control system if left unresolved.

5. Can I continue driving my 2014 Chevrolet Silverado with the P11DA trouble code?

- It is generally not recommended to continue driving with this code illuminated, as it can impact the vehicle's performance and emissions. It's best to address the issue promptly.

6. How can I diagnose and repair OBDII code P11DA in my 2014 Chevrolet Silverado?

- Diagnosis typically involves checking the NOx sensor, inspecting the wiring and connectors for damage, and testing the O2 pump current control circuit for proper voltage. Repairs may involve replacing the NOx sensor or repairing the wiring as needed.

7. Will resetting the Check Engine light make the P11DA code go away in a 2014 Chevrolet Silverado?

- Resetting the light may temporarily clear the code, but if the underlying issue causing the P11DA code is not addressed, the Check Engine light is likely to come back on.

8. How much does it cost to fix OBDII code P11DA in a 2014 Chevrolet Silverado?

- The cost of repairs for this code can vary depending on the exact cause of the issue. It may range from a few hundred dollars for sensor replacement to more extensive repairs if wiring or other components need attention.

9. Can a DIY enthusiast fix OBDII code P11DA in a 2014 Chevrolet Silverado?

- While some aspects of diagnosing and repairing this code may be feasible for experienced DIYers, complex emissions system issues are best handled by professional mechanics with the right tools and expertise.

10. How often does OBDII code P11DA occur in a 2014 Chevrolet Silverado?

- The occurrence of this specific code can vary depending on factors like vehicle maintenance, driving conditions, and overall system health. If the issue is not addressed promptly, it can recur.