AutoCodes – Chevrolet – P0545 2017 Chevrolet Silverado

P0545 2017 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 2017 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 266

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 2017 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 2017 Chevrolet Silverado - Exhaust Gas Temperature Sensor 1 Circuit Low Voltage - AutoCodes.com — P0545 2017 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 1 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0545 2017 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 2017 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 2017 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P0545 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0545 2017 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 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P0545 in a 2017 Chevrolet Silverado?

The common symptoms of P0545 include reduced engine performance, decreased fuel efficiency, and the illumination of the Check Engine Light on the dashboard.

2. What does the OBDII code P0545 mean for a 2017 Chevrolet Silverado?

OBDII code P0545 in a 2017 Chevrolet Silverado indicates a low voltage condition in the Exhaust Gas Temperature Sensor 1 circuit.

3. What are the possible causes of OBDII code P0545 in a 2017 Chevrolet Silverado?

Possible causes of P0545 include a faulty exhaust gas temperature sensor, damaged wiring or connectors in the sensor circuit, or an issue with the engine control module (ECM).

4. How can I diagnose the OBDII code P0545 in my 2017 Chevrolet Silverado?

Diagnosing P0545 involves using an OBDII scanner to retrieve the code, inspecting the exhaust gas temperature sensor and its wiring for damage, and testing the sensor's voltage output.

5. Can I drive my 2017 Chevrolet Silverado with OBDII code P0545?

It is not recommended to drive your Silverado with P0545 for an extended period as it can lead to further damage and reduced engine efficiency. It's best to address the issue promptly.

6. How can I repair OBDII code P0545 in my 2017 Chevrolet Silverado?

Repairing P0545 may involve replacing the exhaust gas temperature sensor, repairing or replacing damaged wiring or connectors, or resetting the ECM after fixing the issue.

7. Is it necessary to reset the Check Engine Light after fixing OBDII code P0545 in my 2017 Chevrolet Silverado?

Yes, it is recommended to reset the Check Engine Light using an OBDII scanner after resolving code P0545 to clear the error code and ensure proper monitoring of the vehicle's systems.

8. Can a DIY enthusiast fix OBDII code P0545 in a 2017 Chevrolet Silverado?

While some aspects of diagnosing and repairing P0545 may be tackled by a DIY enthusiast, it is advisable to seek professional help for accurate diagnosis and proper repair to avoid further complications.

9. How does OBDII code P0545 impact the exhaust system in a 2017 Chevrolet Silverado?

OBDII code P0545 affects the exhaust system by indicating a low voltage issue with the exhaust gas temperature sensor, which can impact emission control and engine performance.

10. How can regular maintenance help prevent OBDII code P0545 in a 2017 Chevrolet Silverado?

Regular maintenance, including timely sensor inspections, checking the wiring harness for damage, and addressing any ECM issues, can help prevent OBDII code P0545 from occurring in your Silverado.