AutoCodes – Chevrolet – P2206 2015 Chevrolet Silverado

P2206 2015 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 2015 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 273

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 2015 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 2015 Chevrolet Silverado - NOx Sensor 1 Heater Control Circuit Low Voltage - AutoCodes.com — P2206 2015 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2206 2015 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 2015 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 2015 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 2015 Chevrolet Silverado 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 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2206 in a 2015 Chevrolet Silverado?

The common symptoms include the Check Engine Light being illuminated, reduced engine performance, poor fuel efficiency, and possible issues with emissions.

2. What does the OBDII code P2206 NOx Sensor 1 Heater Control Circuit Low Voltage indicate?

This code indicates that there is low voltage in the heater control circuit of the NOx (nitrogen oxide) sensor 1 in the exhaust system of the vehicle.

3. What are the possible causes of OBDII code P2206 in a 2015 Chevrolet Silverado?

Possible causes include a faulty NOx sensor, damaged wiring or connectors in the sensor circuit, a blown fuse, or a malfunctioning engine control module (ECM).

4. How can I diagnose the OBDII code P2206 in my 2015 Chevrolet Silverado?

Diagnosis involves using an OBDII scanner to retrieve the fault code, inspecting the NOx sensor and its wiring for damage, checking the sensor's heater element resistance, and testing the related fuses.

5. Is it safe to continue driving my 2015 Chevrolet Silverado with the P2206 code?

It is not recommended to continue driving with this code present, as it can lead to increased emissions and potential long-term damage to the vehicle's emissions control system.

6. Can I repair the OBDII code P2206 in my 2015 Chevrolet Silverado myself?

Depending on your mechanical skills and access to tools, you may be able to repair this issue yourself by replacing the faulty NOx sensor, repairing damaged wiring, or addressing other potential causes of the low voltage condition.

7. Will resetting the Check Engine Light resolve the P2206 code in my 2015 Chevrolet Silverado?

Resetting the Check Engine Light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing the P2206 code. It is important to address the root cause of the problem to prevent further issues.

8. How much does it typically cost to repair OBDII code P2206 in a 2015 Chevrolet Silverado?

The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts such as a new NOx sensor, labor for diagnostics and repair, and potential fees for resetting the code.

9. Can a bad NOx sensor cause other problems in my 2015 Chevrolet Silverado?

A malfunctioning NOx sensor can impact the vehicle's emissions control system, engine performance, and fuel efficiency. Ignoring the issue may lead to further complications and potential damage to other components.

10. How often should the NOx sensor be replaced in a 2015 Chevrolet Silverado?

The NOx sensor typically does not require regular replacement unless it fails or malfunctions. It is important to follow the manufacturer's recommendations and address any related issues promptly to maintain the vehicle's performance and emissions compliance.