AutoCodes – GMC – P0544 GMC

P0544 GMC Code - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1

Quick Answer

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means: P0544 GMC indicates Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection.
Severity: Moderate - service should be scheduled soon.
Can I drive?: The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

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Code Popularity 2,120

How popular is this code, among other codes? Low

Repair Importance Level

Moderate (Service soon) (2 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jan 15, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0544 GMC Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P0544 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P0544 GMC - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1 - AutoCodes.com — P0544 GMC Code - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1

What does this mean?

What are the Possible Causes of the DTC P0544 GMC?

Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 1
Exhaust Gas Temperature Sensor Bank 1 Sensor 1 harness is open or shorted
Exhaust Gas Temperature Sensor Bank 1 Sensor 1 circuit poor electrical connection
Exhaust leaks
Excessive particulate matter buildup on sensor

How to Fix the DTC P0544 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 P0544 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 P0544 GMC code?

Need more information on how to fix the P0544 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0544 GMC 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 P0544 GMC Code

1. What are common symptoms of OBDII code P0544 GMC?

The common symptoms of OBDII code P0544 GMC include poor engine performance, reduced fuel efficiency, and potential issues with the exhaust system.

2. What does OBDII code P0544 GMC mean?

OBDII code P0544 GMC indicates a problem with the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 1 Sensor 1 in the vehicle's exhaust system.

3. What are the possible causes of OBDII code P0544 GMC?

The possible causes of OBDII code P0544 GMC include a faulty EGT sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the issue related to OBDII code P0544 GMC?

Diagnosing OBDII code P0544 GMC involves using a diagnostic scanner to retrieve the code, checking the EGT sensor and its wiring for any visible damage, and testing the sensor's resistance and voltage.

5. Can I still drive my vehicle with OBDII code P0544 GMC?

It is not recommended to drive your vehicle with OBDII code P0544 GMC, as it can lead to further damage to the engine or exhaust system and may result in poor performance.

6. How can I repair OBDII code P0544 GMC?

To repair OBDII code P0544 GMC, you may need to replace the faulty EGT sensor, repair any damaged wiring or connectors, or reprogram the engine control module if necessary.

7. Is it safe to reset the OBDII code P0544 GMC without fixing the underlying issue?

It is not recommended to reset OBDII code P0544 GMC without fixing the underlying issue, as the problem will likely persist and may lead to more severe engine or exhaust system issues.

8. How much does it typically cost to repair OBDII code P0544 GMC?

The cost to repair OBDII code P0544 GMC can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast repair OBDII code P0544 GMC?

A DIY enthusiast with automotive repair experience may be able to repair OBDII code P0544 GMC by following the vehicle's service manual and using the necessary tools and equipment.

10. How often does OBDII code P0544 GMC occur in GMC vehicles?

OBDII code P0544 GMC can occur in GMC vehicles with faulty EGT sensors or related circuit issues, but the frequency may vary depending on the model and age of the vehicle.