AutoCodes – Chevrolet – P2206 2014 Chevrolet Silverado

P2206 2014 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit Low Voltage

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: P2206 2014 Chevrolet Silverado indicates NOx Sensor 1 Heater Control Circuit Low Voltage.
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 270

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 P2206 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 P2206 2014 Chevrolet Silverado - NOx Sensor 1 Heater Control Circuit Low Voltage - AutoCodes.com — P2206 2014 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2206 2014 Chevrolet Silverado?

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 P2206 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 P2206 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 P2206 2014 Chevrolet Silverado code?

Need more information on how to fix the P2206 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 P2206 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2206 in a 2014 Chevrolet Silverado?

- Common symptoms include poor engine performance, decreased fuel efficiency, and the illumination of the Check Engine light.

2. What does the OBDII code P2206 in a 2014 Chevrolet Silverado indicate?

- The code P2206 specifically refers to a low voltage condition detected in the NOx Sensor 1 Heater Control Circuit.

3. What are the possible causes of OBDII code P2206 in a 2014 Chevrolet Silverado?

- Possible causes include a faulty NOx sensor, a malfunctioning heater control circuit, wiring issues, or a problem with the vehicle's ECM.

4. How can I diagnose the issue causing OBDII code P2206 in my 2014 Chevrolet Silverado?

- Diagnose the problem by inspecting the NOx sensor and its wiring, testing the heater control circuit, and checking for any ECM-related issues using a scan tool.

5. Can I continue driving my 2014 Chevrolet Silverado with OBDII code P2206?

- It is not recommended to continue driving with this code as it can lead to further damage and poor vehicle performance. It's best to address the issue promptly.

6. Is it possible to reset the OBDII code P2206 in a 2014 Chevrolet Silverado without fixing the underlying problem?

- While you can clear the code temporarily, it will likely reappear until the root cause is addressed. Resetting the code without fixing the issue is not a permanent solution.

7. How can I repair OBDII code P2206 in my 2014 Chevrolet Silverado?

- Repair options include replacing the NOx sensor, repairing or replacing the heater control circuit, fixing any wiring issues, or addressing ECM malfunctions.

8. Are there any DIY tips for fixing OBDII code P2206 in a 2014 Chevrolet Silverado?

- While some basic troubleshooting like checking wiring connections can be done DIY, it's recommended to seek professional help for diagnosing and repairing this complex issue.

9. How much does it typically cost to fix OBDII code P2206 in a 2014 Chevrolet Silverado?

- The cost of repairs can vary based on the exact cause of the code, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Can a 2014 Chevrolet Silverado pass an emissions test with OBDII code P2206 present?

- No, vehicles with unresolved OBDII codes like P2206 are likely to fail emissions tests. It's crucial to address the issue before attempting an emissions inspection.