AutoCodes – Chevrolet – P2206 2017 Chevrolet Silverado

P2206 2017 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 2017 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 264

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 2017 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 2017 Chevrolet Silverado - NOx Sensor 1 Heater Control Circuit Low Voltage - AutoCodes.com — P2206 2017 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2206 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P2206 2017 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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2206 on a 2017 Chevrolet Silverado?

- Common symptoms include the Check Engine light illuminating, reduced engine performance, increased fuel consumption, and potential emissions issues.

2. What does the OBDII code P2206 for a 2017 Chevrolet Silverado indicate?

- The code P2206 specifically points to an issue with NOx Sensor 1 Heater Control Circuit Low Voltage in the vehicle's exhaust system.

3. What are the possible causes of OBDII code P2206 on a 2017 Chevrolet Silverado?

- Potential causes include a faulty NOx sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or issues with the vehicle's powertrain control module.

4. How serious is the OBDII code P2206 on a 2017 Chevrolet Silverado?

- While the vehicle may still be operable with this code, it is essential to address it promptly to prevent potential damage to the engine or emissions system and ensure compliance with emission regulations.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P2206?

- It is generally not recommended to drive the vehicle extensively with this code present, as it can lead to decreased fuel efficiency, engine performance issues, and possibly harm the exhaust system components.

6. How can I diagnose and repair OBDII code P2206 on my 2017 Chevrolet Silverado?

- Diagnosis involves checking the NOx sensor and its connections, testing the sensor's heater circuit, inspecting related fuses, and using a diagnostic scanner to reset the code after repairs.

7. Are there any DIY repair tips for fixing OBDII code P2206 on a 2017 Chevrolet Silverado?

- DIY enthusiasts can attempt basic checks like ensuring proper sensor connections, inspecting for visible wiring damage, and replacing blown fuses. However, for complex issues, professional help may be required.

8. Can a bad NOx sensor cause OBDII code P2206 on a 2017 Chevrolet Silverado?

- Yes, a malfunctioning NOx sensor, particularly with a faulty heater control circuit, is a common culprit for triggering the P2206 code in the 2017 Chevrolet Silverado.

9. How much does it cost to repair OBDII code P2206 on a 2017 Chevrolet Silverado?

- Repair costs can vary depending on the exact cause of the issue, but they typically range from $200 to $500, including parts and labor at a dealership or auto repair shop.

10. Will OBDII code P2206 on a 2017 Chevrolet Silverado affect the vehicle's emissions test?

- Yes, having the P2206 code present can lead to emissions test failure, as it indicates a problem with the NOx sensor's heater control, impacting the vehicle's emission control system.