AutoCodes – Chevrolet – P2207 2014 Chevrolet Silverado

P2207 2014 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 2014 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 335

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 2014 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 2014 Chevrolet Silverado - NOx Sensor 1 Heater Control Circuit High Voltage - AutoCodes.com — P2207 2014 Chevrolet Silverado Code - NOx Sensor 1 Heater Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2207 2014 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 2014 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 2014 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 2014 Chevrolet Silverado code?

Need more information on how to fix the P2207 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2207 2014 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 2014 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2207 on a 2014 Chevrolet Silverado related to NOx Sensor 1 Heater Control Circuit High Voltage?

The common symptoms include the check engine light being illuminated, decreased fuel efficiency, and potential issues passing emissions tests.

2. What are the possible causes of OBDII code P2207 on a 2014 Chevrolet Silverado?

Possible causes of this code include a faulty NOx sensor, issues with the NOx sensor heater circuit, wiring problems, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the cause of OBDII code P2207 on my 2014 Chevrolet Silverado?

Diagnosing this code typically involves using a scan tool to check for other related trouble codes, testing the NOx sensor and its heater circuit for proper functioning, and inspecting the wiring for any damage or loose connections.

4. Can I continue to drive my 2014 Chevrolet Silverado with OBDII code P2207 present?

While the vehicle may still be driveable with this code present, it is recommended to address the underlying issue promptly to prevent potential damage to other components and ensure optimal vehicle performance.

5. How can I repair OBDII code P2207 on my 2014 Chevrolet Silverado related to NOx Sensor 1 Heater Control Circuit High Voltage?

Repairing this code may involve replacing the NOx sensor, repairing or replacing damaged wiring, or addressing any issues with the PCM as necessary.

6. Will resetting the check engine light clear OBDII code P2207 on a 2014 Chevrolet Silverado?

Resetting the check engine light may temporarily clear the code, but if the underlying issue causing the code is not addressed, the code is likely to return.

7. Are there any DIY tips for addressing OBDII code P2207 on a 2014 Chevrolet Silverado?

While some simple checks like inspecting the wiring connections can be done by DIY enthusiasts, diagnosing and repairing issues related to this code may require specialized tools and expertise, so professional assistance is recommended.

8. How much does it typically cost to repair OBDII code P2207 on a 2014 Chevrolet Silverado?

The cost of repairs for this code can vary depending on the specific cause of the issue, the labor rates in your area, and whether any components need to be replaced. It is advisable to get a diagnostic assessment from a qualified mechanic for an accurate estimate.

9. Can a malfunctioning NOx sensor cause other issues in addition to triggering OBDII code P2207 on a 2014 Chevrolet Silverado?

Yes, a malfunctioning NOx sensor can potentially impact the vehicle's emissions performance, fuel efficiency, and overall engine operation if left unaddressed.

10. How often should the NOx sensor be inspected or replaced on a 2014 Chevrolet Silverado to prevent OBDII code P2207 from recurring?

Regular maintenance checks and following the manufacturer's recommended service intervals can help prevent issues with the NOx sensor and reduce the likelihood of OBDII code P2207 reoccurring.