AutoCodes – GMC – P041D GMC

P041D GMC Code - Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage

Quick Answer

The Exhaust Gas Recirculation (EGR) temperature sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the EGR cooler. Common causes include Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 1, Exhaust Gas Recirculation Temperature Sensor 1 harness is open or shorted, Exhaust Gas Recirculation Temperature Sensor 1 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: P041D GMC indicates Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage.
Common causes: Common causes include Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 1, Exhaust Gas Recirculation Temperature Sensor 1 harness is open or shorted, Exhaust Gas Recirculation Temperature Sensor 1 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 3,513

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 20, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P041D GMC Description

The Exhaust Gas Recirculation (EGR) temperature sensors are variable resistors that measure the temperature of the exhaust gas at the inlet and outlet of the EGR cooler. The Engine Control Module (ECM) supplies 5 volts to the EGR temperature sensor signal circuit and a ground for the low reference circuit. When the EGR temperature sensor is cold, the sensor resistance is high. When the EGR temperature increases, the sensor resistance decreases. The ECM detects a higher voltage on the EGR temperature signal circuit with high sensor resistance. With lower sensor resistance, the ECM detects a lower voltage on the EGR temperature signal circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the EGR temperature sensor resistance has changed greater than 25 Ω in 0.1 s.

OBDII Code P041D GMC - Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage - AutoCodes.com — P041D GMC Code - Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P041D GMC?

Faulty Exhaust Gas Recirculation (EGR) Temperature Sensor 1
Exhaust Gas Recirculation Temperature Sensor 1 harness is open or shorted
Exhaust Gas Recirculation Temperature Sensor 1 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P041D GMC?

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 P041D GMC 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 P041D GMC code?

Need more information on how to fix the P041D GMC code? Get Access to Factory Service Manuals

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Information for Specific GMC Models

P041D 2014 GMC Sierra — Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage
P041D 2015 GMC Sierra — Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage
P041D 2016 GMC Sierra — Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage
P041D 2017 GMC Sierra — Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage
P041D 2018 GMC Sierra — Exhaust Gas Recirculation Temperature Sensor 1 Circuit High Voltage

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 P041D GMC Code

1. What are the common symptoms of OBDII code P041D in a GMC vehicle?

The common symptoms of OBDII code P041D include the check engine light being illuminated on the dashboard, reduced engine performance, and potential issues with emissions.

2. What does the OBDII code P041D GMC indicate?

OBDII code P041D in a GMC vehicle indicates a high voltage condition in the Exhaust Gas Recirculation Temperature Sensor 1 circuit.

3. What are the possible causes of OBDII code P041D in a GMC vehicle?

Possible causes of OBDII code P041D in a GMC vehicle include a faulty Exhaust Gas Recirculation Temperature Sensor, wiring issues in the sensor circuit, or a problem with the engine control module.

4. How can I diagnose the OBDII code P041D in my GMC vehicle?

Diagnosing OBDII code P041D involves using a diagnostic scanner to retrieve the code, checking the Exhaust Gas Recirculation Temperature Sensor 1 circuit for voltage irregularities, and testing the sensor itself for proper functionality.

5. Can I continue driving my GMC vehicle with the OBDII code P041D present?

It is not recommended to continue driving your GMC vehicle with the OBDII code P041D present, as it can lead to reduced engine performance and potential damage to the emissions system.

6. How can I repair OBDII code P041D in my GMC vehicle?

Repairing OBDII code P041D may involve replacing the Exhaust Gas Recirculation Temperature Sensor, repairing any damaged wiring in the sensor circuit, or resetting the engine control module.

7. Are there any DIY tips for addressing OBDII code P041D in a GMC vehicle?

DIY tips for addressing OBDII code P041D include checking the wiring connections to the Exhaust Gas Recirculation Temperature Sensor, ensuring the sensor is clean and free of debris, and resetting the code using a diagnostic scanner.

8. Is OBDII code P041D a common issue in GMC vehicles?

OBDII code P041D is not as common as some other codes, but it can still occur in GMC vehicles, especially in older models or vehicles with high mileage.

9. Can a mechanic help me with diagnosing and repairing OBDII code P041D in my GMC vehicle?

Yes, a qualified mechanic can help diagnose and repair OBDII code P041D in your GMC vehicle, ensuring that the issue is properly addressed and resolved.

10. Does fixing OBDII code P041D require specialized tools or equipment?

Fixing OBDII code P041D may require specialized tools such as a diagnostic scanner, multimeter, and possibly specific tools for accessing the Exhaust Gas Recirculation Temperature Sensor in your GMC vehicle.