AutoCodes – Chevrolet – P0545 2018 Chevrolet Silverado

P0545 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 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) 1, Exhaust Gas Temperature Sensor 1 harness is open or shorted, Exhaust Gas Temperature 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: P0545 2018 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 1 Circuit Low Voltage.
Common causes: Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) 1, Exhaust Gas Temperature Sensor 1 harness is open or shorted, Exhaust Gas Temperature 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 494

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 Jul 03, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0545 2018 Chevrolet Silverado 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 P0545 2018 Chevrolet Silverado - Exhaust Gas Temperature Sensor 1 Circuit Low Voltage - AutoCodes.com — P0545 2018 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0545 2018 Chevrolet Silverado?

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

How to Fix the DTC P0545 2018 Chevrolet Silverado?

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 P0545 2018 Chevrolet Silverado 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 P0545 2018 Chevrolet Silverado code?

Need more information on how to fix the P0545 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0545 2018 Chevrolet Silverado 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 P0545 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0545 in a 2018 Chevrolet Silverado?

Common symptoms include poor engine performance, reduced fuel efficiency, illuminated Check Engine Light, and potential issues with the exhaust system.

2. What causes the Exhaust Gas Temperature Sensor 1 Circuit Low Voltage code (P0545) in a 2018 Chevrolet Silverado?

Potential causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors related to the sensor, or issues with the sensor circuit.

3. How serious is the P0545 code in a 2018 Chevrolet Silverado?

While the vehicle may still be driveable with this code, it is important to address it promptly to prevent potential damage to the engine or exhaust system and to maintain optimal vehicle performance.

4. Can I continue driving my 2018 Chevrolet Silverado with the P0545 code?

It is generally not recommended to continue driving with the P0545 code present, as it can lead to decreased fuel efficiency, engine performance issues, and potential damage to the exhaust system over time.

5. How can I diagnose the cause of the P0545 code in my 2018 Chevrolet Silverado?

Diagnosis typically involves using a scan tool to read the code, inspecting the exhaust gas temperature sensor and related components, checking for damaged wiring or connectors, and testing the sensor circuit.

6. What is the typical repair process for fixing code P0545 in a 2018 Chevrolet Silverado?

The repair process usually involves replacing the faulty exhaust gas temperature sensor, repairing any damaged wiring or connectors, and clearing the code from the vehicle's computer.

7. Are there any DIY tips for addressing the P0545 code in a 2018 Chevrolet Silverado?

While some DIY enthusiasts may attempt to replace the exhaust gas temperature sensor themselves, it is recommended to have the repair done by a qualified mechanic to ensure proper diagnosis and repair.

8. How much does it cost to fix the P0545 code in a 2018 Chevrolet Silverado?

The cost of fixing the P0545 code can vary depending on the root cause of the issue, but it typically ranges from $100 to $300 for parts and labor.

9. Can a faulty exhaust gas temperature sensor cause other issues in a 2018 Chevrolet Silverado?

Yes, a faulty sensor can lead to poor engine performance, decreased fuel efficiency, and potential damage to the exhaust system if not addressed promptly.

10. How can I prevent the P0545 code from reoccurring in my 2018 Chevrolet Silverado?

Regular maintenance, such as checking and replacing sensors as needed, keeping up with recommended service intervals, and addressing any engine or exhaust system issues promptly, can help prevent the P0545 code from reoccurring.