AutoCodes.com
Login with Google
AutoCodes – Chevrolet – P2206 2016 Chevrolet Silverado

P2206 2016 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 2016 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.
Save to My Repairs My Repairs
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 244
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Mar 24, 2024
💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2206 2016 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 2016 Chevrolet Silverado - NOx Sensor 1 Heater Control Circuit Low Voltage - AutoCodes.com
P2206 2016 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit Low Voltage
What does this mean?

What are the Possible Causes of the DTC P2206 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the P2206 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2206 2016 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 P2206 2016 Chevrolet Silverado Code

1. What does the P2206 code mean on a 2016 Chevrolet Silverado?

The P2206 code indicates a problem with the NOx Sensor 1 Heater Control Circuit experiencing low voltage.

2. What are the symptoms of the P2206 code on a Chevrolet Silverado?

Common symptoms include the check engine light, reduced fuel efficiency, engine hesitation, or decreased performance.

3. What causes the P2206 code on a 2016 Silverado?

The most common causes are a faulty NOx sensor, damaged wiring or connectors in the heater circuit, or a malfunctioning control module.

4. Can a dirty NOx sensor cause the P2206 code?

While dirt or contamination can affect sensor performance, the P2206 code specifically relates to a heater circuit voltage issue, not sensor cleanliness.

5. How do you diagnose the P2206 code on a Silverado?

Diagnosis typically involves checking the NOx sensor heater circuit for continuity, inspecting wiring and connectors for damage, and testing the sensor itself.

6. Is it safe to drive with the P2206 code on a Chevrolet Silverado?

Driving with this code may not immediately harm the vehicle, but prolonged operation can lead to reduced efficiency and potential damage to the emissions system.

7. How do you fix the P2206 code on a 2016 Silverado?

Repairs may include replacing the NOx sensor, repairing damaged wiring, or updating/replacing the engine control module if necessary.

8. How much does it cost to fix the P2206 code on a Chevrolet Silverado?

Repair costs vary but typically range from $300 to $600 for parts and labor if the NOx sensor needs replacement.

9. Can a failed NOx sensor cause other problems in the Silverado?

Yes, a failed NOx sensor can lead to improper emissions system operation, reduced performance, and failure to meet environmental regulations.

10. Will clearing the P2206 code fix the problem?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be repaired to prevent the code from returning.

Discuss the causes and fixes for P2206 2016 Chevrolet Silverado OBDII Code

Submit a New Comment

Code P2206 2016 Chevrolet Silverado comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play