AutoCodes – GMC – P2206 2016 GMC Sierra

P2206 2016 GMC Sierra 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 2016 GMC Sierra 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 170

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
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Code P2206 2016 GMC Sierra 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 2016 GMC Sierra - NOx Sensor 1 Heater Control Circuit Low Voltage - AutoCodes.com — P2206 2016 GMC Sierra Code - NOx Sensor 1 Heater Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2206 2016 GMC Sierra?

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 2016 GMC Sierra?

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 2016 GMC Sierra 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 2016 GMC Sierra code?

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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 2016 GMC Sierra Code

1. What are the common symptoms of OBDII code P2206 in a 2016 GMC Sierra related to NOx Sensor 1 Heater Control Circuit Low Voltage?

The common symptoms include check engine light illuminated on the dashboard, poor engine performance, decreased fuel efficiency, and potential failure to pass emissions tests.

2. What are the possible causes of OBDII code P2206 in a 2016 GMC Sierra related to NOx Sensor 1 Heater Control Circuit Low Voltage?

The code P2206 can be triggered by issues such as a faulty NOx sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a malfunctioning powertrain control module (PCM).

3. How do I diagnose the OBDII code P2206 in a 2016 GMC Sierra related to NOx Sensor 1 Heater Control Circuit Low Voltage?

Diagnosing code P2206 involves using an OBDII scanner to retrieve the code, inspecting the NOx sensor and its wiring for damage, checking the fuse related to the sensor circuit, and testing the PCM for proper function.

4. Can I continue driving my 2016 GMC Sierra with OBDII code P2206 related to NOx Sensor 1 Heater Control Circuit Low Voltage?

It is not recommended to drive the vehicle with this code as it can lead to poor engine performance and potential damage. It is advisable to address the issue promptly to prevent further complications.

5. How can I repair OBDII code P2206 in my 2016 GMC Sierra related to NOx Sensor 1 Heater Control Circuit Low Voltage?

Repair options may include replacing the NOx sensor, repairing or replacing damaged wiring or connectors, checking and replacing any blown fuses, and resetting the trouble code using an OBDII scanner.

6. Is it possible to reset the OBDII code P2206 in a 2016 GMC Sierra related to NOx Sensor 1 Heater Control Circuit Low Voltage without fixing the underlying issue?

While you can clear the trouble code with an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure the proper functioning of the vehicle.

7. Can a DIY enthusiast fix OBDII code P2206 related to NOx Sensor 1 Heater Control Circuit Low Voltage in a 2016 GMC Sierra?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this issue by following repair guides and tutorials. However, if unsure, it is best to consult a professional mechanic.

8. How much does it typically cost to repair OBDII code P2206 in a 2016 GMC Sierra related to NOx Sensor 1 Heater Control Circuit Low Voltage?

The cost of repairing this code can vary based on the specific issue causing it, the labor rates of the repair shop, and the cost of parts needed. It is advisable to obtain quotes from multiple sources for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code P2206 related to NOx Sensor 1 Heater Control Circuit Low Voltage in a 2016 GMC Sierra?

Regular maintenance, such as inspecting the NOx sensor and its wiring, ensuring proper electrical connections, and promptly addressing any check engine light warnings, can help prevent the occurrence of this code.

10. Will OBDII code P2206 related to NOx Sensor 1 Heater Control Circuit Low Voltage in a 2016 GMC Sierra affect the vehicle's emissions output?

Yes, this code is related to the NOx sensor, which plays a crucial role in monitoring and controlling emissions. Ignoring or neglecting this issue can lead to increased emissions output and potential environmental impact.