AutoCodes – GMC – P2207 2017 GMC Sierra

P2207 2017 GMC Sierra 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 GMC Sierra 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.

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Code Popularity 166

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

What does this mean?

What are the Possible Causes of the DTC P2207 2017 GMC Sierra?

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 GMC Sierra?

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 GMC Sierra 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 GMC Sierra code?

Need more information on how to fix the P2207 2017 GMC Sierra 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 P2207 2017 GMC Sierra Code

1. What are the common symptoms of OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- Common symptoms may include the Check Engine light illuminating, reduced engine performance, and potential failures to meet emissions standards.

2. What are the possible causes of OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- Possible causes include a faulty NOx sensor, damaged wiring or connectors, a blown fuse, or issues with the sensor's heater control circuit.

3. How can I diagnose OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code, checking the sensor's wiring and connectors for damage, and testing the sensor's resistance.

4. Can I continue driving my 2017 GMC Sierra with OBDII code P2207 related to NOx Sensor 1 Heater Control Circuit High Voltage?

- It is not recommended to continue driving with this fault code as it can lead to reduced engine performance and potential emissions issues. It's best to address the problem promptly.

5. How can I repair OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- Repair methods may include replacing the faulty NOx sensor, repairing damaged wiring or connectors, checking and replacing any blown fuses, and clearing the fault code with an OBDII scanner.

6. Is it possible to reset OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- While you can clear the fault code with an OBDII scanner, it's important to address the underlying issue causing the fault code to prevent it from reoccurring.

7. How much does it cost to fix OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

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

8. Can a DIY enthusiast repair OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address this issue by following repair guides and tutorials specific to the GMC Sierra model.

9. Will OBDII code P2207 on a 2017 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage affect fuel efficiency?

- While the direct impact on fuel efficiency may vary, unresolved issues related to this fault code can potentially affect the vehicle's overall performance and emissions output.

10. How often does OBDII code P2207 related to NOx Sensor 1 Heater Control Circuit High Voltage occur in a 2017 GMC Sierra?

- The occurrence of this fault code can vary based on factors such as vehicle usage, maintenance history, and environmental conditions, but addressing any underlying issues promptly can help prevent its recurrence.