AutoCodes – Chevrolet – P2207 2017 Chevrolet Silverado

P2207 2017 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit High 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: P2207 2017 Chevrolet Silverado indicates NOx Sensor 1 Heater Control Circuit High 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 267

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2207 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 P2207 2017 Chevrolet Silverado - NOx Sensor 1 Heater Control Circuit High Voltage - AutoCodes.com — P2207 2017 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2207 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 P2207 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 P2207 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 P2207 2017 Chevrolet Silverado code?

Need more information on how to fix the P2207 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2207 2017 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 P2207 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2207 in a 2017 Chevrolet Silverado?

- Common symptoms include the check engine light turning on, reduced engine performance, and potential failure to pass emissions testing.

2. What does the OBDII code P2207 indicating "NOx Sensor 1 Heater Control Circuit High Voltage" mean for a 2017 Chevrolet Silverado?

- This code signifies that the NOx (nitrogen oxide) sensor 1 heater control circuit is detecting a higher voltage than normal, indicating a potential issue with the sensor's heating element.

3. What are the possible causes of OBDII code P2207 in a 2017 Chevrolet Silverado?

- Potential causes include a faulty NOx sensor, a malfunctioning sensor heater control circuit, damaged wiring or connectors, or an issue with the engine control module.

4. How serious is OBDII code P2207 for a 2017 Chevrolet Silverado?

- While the vehicle may still be operable in the short term, it is essential to address this code promptly to prevent potential damage to the NOx sensor and ensure optimal engine performance.

5. Can I continue driving my 2017 Chevrolet Silverado with OBDII code P2207?

- It is generally not recommended to drive the vehicle for an extended period with this code present, as it can lead to reduced fuel efficiency, increased emissions, and potential engine damage if left unresolved.

6. How can I diagnose OBDII code P2207 in my 2017 Chevrolet Silverado?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific error codes, inspecting the NOx sensor and its connections, and testing the sensor heater control circuit for proper functionality.

7. What are some repair tips for fixing OBDII code P2207 in a 2017 Chevrolet Silverado?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the NOx sensor if found to be faulty, and resetting the engine control module to clear the code.

8. Is it possible to reset OBDII code P2207 in a 2017 Chevrolet Silverado without fixing the underlying issue?

- While clearing the code temporarily may be possible, it is crucial to address the root cause of the problem to prevent the code from reappearing and ensure the vehicle's proper functioning.

9. How much does it cost to repair OBDII code P2207 in a 2017 Chevrolet Silverado?

- The cost of repair can vary depending on the specific issue causing the code, but it may involve expenses for parts, labor, and diagnostic services. Estimates from automotive professionals can provide a more accurate cost breakdown.

10. Can a DIY enthusiast fix OBDII code P2207 in a 2017 Chevrolet Silverado?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to address simpler causes of this code, such as checking and repairing wiring connections. However, more complex issues may require professional assistance.