AutoCodes – GMC – P2032 2018 GMC Sierra

P2032 2018 GMC Sierra Code - Exhaust Gas Temperature Sensor 2 Circuit Low Voltage

Quick Answer

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 2, Exhaust Gas Temperature Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor 2 circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P2032 2018 GMC Sierra indicates Exhaust Gas Temperature Sensor 2 Circuit Low Voltage.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 2, Exhaust Gas Temperature Sensor 2 harness is open or shorted, Exhaust Gas Temperature Sensor 2 circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 189

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 03, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2032 2018 GMC Sierra Description

The Exhaust Gas Temperature sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Exhaust temperature sensor 1 is the first exhaust temperature sensor in the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will ve set when the ECM detects that the exhaust gas temperature sensor is less than 158 Ω for greater than 2 s.

OBDII Code P2032 2018 GMC Sierra - Exhaust Gas Temperature Sensor 2 Circuit Low Voltage - AutoCodes.com — P2032 2018 GMC Sierra Code - Exhaust Gas Temperature Sensor 2 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P2032 2018 GMC Sierra?

Faulty Exhaust Gas Temperature Sensor (EGTS) 2
Exhaust Gas Temperature Sensor 2 harness is open or shorted
Exhaust Gas Temperature Sensor 2 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2032 2018 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 does this mean?

Code Tech Notes

After starting the engine, the exhaust gas temperature sensor temperature should rise steadily, then stabilize after the engine reaches operating temperature. Exhaust gas temperature sensors may fail intermittently while operating under extreme temperatures. Review the Freeze Frame/Failure Records to verify the failure criteria.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2032 2018 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 P2032 2018 GMC Sierra code?

Need more information on how to fix the P2032 2018 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 P2032 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P2032 on a 2018 GMC Sierra related to the Exhaust Gas Temperature Sensor 2 Circuit Low Voltage?

The common symptoms include poor engine performance, decreased fuel efficiency, and potential illumination of the Check Engine Light.

2. What could be the possible causes of OBDII code P2032 on a 2018 GMC Sierra?

Possible causes of this code can include a faulty exhaust gas temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's power supply.

3. How can I diagnose the Exhaust Gas Temperature Sensor 2 Circuit Low Voltage issue on my 2018 GMC Sierra?

You can diagnose this issue by using an OBDII scanner to retrieve the trouble code, inspecting the sensor and its wiring for any visible damage, and testing the sensor's resistance and voltage output.

4. Is it safe to continue driving my 2018 GMC Sierra with OBDII code P2032 indicating a low voltage from the Exhaust Gas Temperature Sensor 2 Circuit?

It is not recommended to drive the vehicle with this code present, as it can lead to potential engine damage and decreased performance. It's best to address the issue promptly.

5. How can I repair OBDII code P2032 on my 2018 GMC Sierra?

To repair this code, you may need to replace the faulty exhaust gas temperature sensor, repair any damaged wiring or connectors, and clear the trouble code from the vehicle's computer using an OBDII scanner.

6. Can a DIY enthusiast fix the Exhaust Gas Temperature Sensor 2 Circuit Low Voltage issue on a 2018 GMC Sierra?

While some experienced DIY enthusiasts may be able to diagnose and replace the sensor themselves, it's recommended to consult a professional mechanic for accurate diagnosis and repair of this issue.

7. Are there any preventive maintenance tips to avoid OBDII code P2032 on a 2018 GMC Sierra in the future?

Regularly inspecting the exhaust gas temperature sensor, keeping up with routine vehicle maintenance, and avoiding harsh driving conditions can help prevent issues related to this trouble code.

8. How much does it typically cost to repair OBDII code P2032 on a 2018 GMC Sierra at a dealership or auto repair shop?

The cost of repairing this code can vary depending on the extent of the damage and parts needed, but it could range from $150 to $400 at a dealership or auto repair shop.

9. Can a malfunctioning Exhaust Gas Temperature Sensor affect the emissions of my 2018 GMC Sierra?

Yes, a malfunctioning exhaust gas temperature sensor can affect the vehicle's emissions, potentially causing it to produce higher levels of harmful pollutants.

10. Will resetting the trouble code resolve OBDII code P2032 on a 2018 GMC Sierra permanently?

Simply resetting the trouble code may temporarily clear the Check Engine Light, but if the underlying issue with the Exhaust Gas Temperature Sensor 2 Circuit Low Voltage is not addressed, the code is likely to reappear.