Engine-Codes.com
Engine-Codes – Chevrolet – P242C 2016 Chevrolet Silverado

P242C 2016 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 3 Circuit Low Voltage

Quick Answer

The P242C diagnostic trouble code (DTC) specifically relates to the Exhaust Gas Temperature Sensor 3 Circuit Low Voltage in a 2016 Chevrolet Silverado. Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be faulty and not sending the correct voltage signal to the ECM, Wiring or Connector Issues: Damaged wiring or connectors in the sensor circuit can disrupt the signal transmission, leading to a low voltage reading, ECM Malfunction: A malfunctioning ECM may not be able to properly interpret the signals from the exhaust gas temperature sensor. 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
P242C 2016 Chevrolet Silverado indicates Exhaust Gas Temperature Sensor 3 Circuit Low Voltage.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be faulty and not sending the correct voltage signal to the ECM, Wiring or Connector Issues: Damaged wiring or connectors in the sensor circuit can disrupt the signal transmission, leading to a low voltage reading, ECM Malfunction: A malfunctioning ECM may not be able to properly interpret the signals from the exhaust gas temperature sensor.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 14, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P242C 2016 Chevrolet Silverado Description

The P242C diagnostic trouble code (DTC) specifically relates to the Exhaust Gas Temperature Sensor 3 Circuit Low Voltage in a 2016 Chevrolet Silverado. This code indicates that the exhaust gas temperature sensor 3 is sending a signal to the engine control module (ECM) that is lower than the expected voltage range. The exhaust gas temperature sensor is a crucial component in monitoring the temperature of the exhaust gases leaving the engine. This information is used by the ECM to adjust fuel delivery and optimize engine performance.

OBDII Code P242C 2016 Chevrolet Silverado - Exhaust Gas Temperature Sensor 3 Circuit Low Voltage
P242C 2016 Chevrolet Silverado Code - Exhaust Gas Temperature Sensor 3 Circuit Low Voltage

Common Causes of P242C 2016 Chevrolet Silverado

  1. Faulty Exhaust Gas Temperature Sensor: The sensor itself may be faulty and not sending the correct voltage signal to the ECM.
  2. Wiring or Connector Issues: Damaged wiring or connectors in the sensor circuit can disrupt the signal transmission, leading to a low voltage reading.
  3. ECM Malfunction: A malfunctioning ECM may not be able to properly interpret the signals from the exhaust gas temperature sensor.
  4. Exhaust System Leaks: Leaks in the exhaust system can affect the accuracy of the sensor readings, triggering the P242C code.
  5. Exhaust Gas Temperature Sensor Placement: Incorrect placement or mounting of the sensor can lead to inaccurate readings and trigger the code.

Symptoms of P242C 2016 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the P242C code is the illumination of the check engine light on the vehicle's dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning exhaust gas temperature sensor can lead to decreased fuel efficiency as the ECM may not be able to adjust fuel delivery accurately.
  3. Rough Idle: The engine may experience rough idling or hesitation when the exhaust gas temperature sensor is not functioning properly.
  4. Reduced Power Output: The vehicle may exhibit reduced power output or sluggish acceleration due to incorrect fuel delivery.
  5. Increased Emissions: A malfunctioning exhaust gas temperature sensor can cause the vehicle to produce higher emissions, potentially leading to environmental concerns.

How to Fix P242C 2016 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the exhaust gas temperature sensor 3 and its circuit.
  2. Replace the Exhaust Gas Temperature Sensor: If the sensor is found to be faulty, replace it with a new, OEM-quality sensor.
  3. Check Wiring and Connectors: Inspect the wiring and connectors in the sensor circuit for any damage or corrosion. Repair or replace as necessary.
  4. Clear the Codes: After completing the repair, clear the DTCs from the ECM memory using a diagnostic scanner.
  5. Test Drive: Take the vehicle for a test drive to ensure that the repair has resolved the issue and that the check engine light does not reappear.

Cost to Fix P242C 2016 Chevrolet Silverado

The typical repair costs for addressing the P242C code in a 2016 Chevrolet Silverado can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. In general, the cost of replacing the exhaust gas temperature sensor 3 can range from $100 to $300, including parts and labor. Additional costs may be incurred if wiring or connectors need to be repaired or replaced.

What does this mean?

Tech Notes for P242C 2016 Chevrolet Silverado

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.

Need more information about the P242C 2016 Chevrolet Silverado code?

Need more information on how to fix the P242C 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P242C 2016 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 P242C 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P242C in a 2016 Chevrolet Silverado?

The common symptoms of code P242C may include poor engine performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P242C Exhaust Gas Temperature Sensor 3 Circuit Low Voltage indicate in a 2016 Chevrolet Silverado?

Code P242C indicates that there is a low voltage condition detected in the circuit of Exhaust Gas Temperature Sensor 3 in the vehicle's exhaust system.

3. What are the possible causes of OBDII code P242C in a 2016 Chevrolet Silverado?

Potential causes of code P242C include a faulty exhaust gas temperature sensor, damaged wiring or connectors in the sensor circuit, or issues with the engine control module.

4. How can I diagnose the OBDII code P242C in my 2016 Chevrolet Silverado?

Diagnosing code P242C typically involves using an OBDII scanner to retrieve the code, inspecting the exhaust gas temperature sensor and its circuit for any visible damage, and testing the sensor's voltage output.

5. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P242C?

It is not recommended to drive your vehicle with an unresolved P242C code, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

6. How can I repair OBDII code P242C in a 2016 Chevrolet Silverado?

Repairing code P242C may involve replacing the Exhaust Gas Temperature Sensor 3, repairing any damaged wiring or connectors, and clearing the code with an OBDII scanner.

7. Are there any DIY tips for fixing OBDII code P242C in a 2016 Chevrolet Silverado?

While some basic troubleshooting steps can be taken, it is advisable to consult a professional mechanic for accurate diagnosis and repair of code P242C to ensure the issue is properly resolved.

8. How much does it cost to fix OBDII code P242C in a 2016 Chevrolet Silverado?

The cost of repairing code P242C can vary depending on the extent of the issue, the cost of parts needed, and labor charges. It is recommended to obtain quotes from different repair shops for an accurate estimate.

9. Can a faulty Exhaust Gas Temperature Sensor cause other problems in a 2016 Chevrolet Silverado besides triggering code P242C?

Yes, a faulty Exhaust Gas Temperature Sensor can potentially cause other issues such as poor fuel efficiency, improper emission levels, and overall engine performance problems in the vehicle.

10. Is it possible for code P242C in a 2016 Chevrolet Silverado to reoccur after being repaired?

If the root cause of the issue is not properly addressed during the repair, there is a possibility for code P242C to reoccur. It is essential to ensure that all related components are thoroughly inspected and repaired to prevent recurrence.

Discuss the causes and fixes for P242C 2016 Chevrolet Silverado OBDII Code

Submit a New Comment

Code P242C 2016 Chevrolet Silverado comments

No comments found for this page.