AutoCodes – GMC – P2207 2015 GMC Sierra

P2207 2015 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 2015 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 214

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 2015 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 2015 GMC Sierra - NOx Sensor 1 Heater Control Circuit High Voltage - AutoCodes.com — P2207 2015 GMC Sierra Code - NOx Sensor 1 Heater Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P2207 2015 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 2015 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 2015 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 2015 GMC Sierra 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 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P2207 in a 2015 GMC Sierra related to NOx Sensor 1 Heater Control Circuit High Voltage?

- Common symptoms include the Check Engine Light illuminating, reduced engine performance, and potential issues with emissions.

2. What are the possible causes of OBDII code P2207 in a 2015 GMC Sierra?

- The main causes can be a faulty NOx sensor, a malfunctioning heater control circuit, wiring issues, or a problem with the vehicle's engine control module (ECM).

3. How can I diagnose the NOx Sensor 1 Heater Control Circuit High Voltage issue in my 2015 GMC Sierra?

- To diagnose the problem, you can use an OBDII scanner to retrieve the specific fault code, inspect the wiring for any damage or corrosion, and test the NOx sensor and its heater control circuit for proper functioning.

4. Is it safe to continue driving my 2015 GMC Sierra with OBDII code P2207 related to the NOx sensor?

- It is generally not recommended to drive the vehicle with this code present, as it can lead to increased emissions and potential damage to other components. It is best to address the issue promptly.

5. Can I repair OBDII code P2207 in my 2015 GMC Sierra related to the NOx sensor myself?

- While some DIY enthusiasts may attempt to address the issue, it is recommended to consult a professional mechanic or dealership due to the complexity of diagnosing and repairing NOx sensor-related problems.

6. How much does it typically cost to repair OBDII code P2207 NOx Sensor 1 Heater Control Circuit High Voltage in a 2015 GMC Sierra?

- The cost of repairs can vary depending on the exact cause of the issue, but it may involve replacing the NOx sensor, repairing wiring, or addressing ECM problems. Costs can range from a few hundred to over a thousand dollars.

7. Are there any preventive maintenance steps I can take to avoid OBDII code P2207 in my 2015 GMC Sierra?

- Regular vehicle maintenance, such as keeping up with scheduled services, checking for any wiring issues, and ensuring proper functioning of emissions-related components, can help prevent issues like P2207 from occurring.

8. Can a bad NOx sensor cause other problems in my 2015 GMC Sierra besides triggering OBDII code P2207?

- Yes, a faulty NOx sensor can potentially impact the vehicle's emissions output, fuel efficiency, and overall engine performance if left unresolved.

9. How long does it typically take to repair OBDII code P2207 related to the NOx sensor in a 2015 GMC Sierra?

- The repair time can vary based on the specific diagnosis and parts availability. In general, it may take a few hours to a full day to address the NOx sensor heater control circuit high voltage issue.

10. Will resetting the OBDII code P2207 in my 2015 GMC Sierra make the problem go away permanently?

- Simply resetting the code without addressing the underlying issue will not permanently solve the problem. It is crucial to diagnose and repair the root cause to prevent the code from reoccurring.