AutoCodes – Chevrolet – P242E Chevrolet

P242E Chevrolet Code - Exhaust Gas Temperature Sensor 3 Circuit Intermittent

Quick Answer

The Exhaust Gas Temperature Sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. Common causes include Exhaust leaks, Faulty Exhaust Gas Temperature Sensor (EGTS) 3, Exhaust Gas Temperature Sensor 3 harness is open or shorted. 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: P242E Chevrolet indicates Exhaust Gas Temperature Sensor 3 Circuit Intermittent.
Common causes: Common causes include Exhaust leaks, Faulty Exhaust Gas Temperature Sensor (EGTS) 3, Exhaust Gas Temperature Sensor 3 harness is open or shorted.
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 3,214

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P242E Chevrolet Description

The Exhaust Gas Temperature Sensors (EGTS) are variable resistors that measure the temperature of the exhaust gas. The exhaust temperature sensor 1 is the first exhaust temperature sensor on 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 be set when the ECM detects that the Exhaust Gas Temperature Sensor resistance has changed greater than a calibrated amount in less than 1 s.

OBDII Code P242E Chevrolet - Exhaust Gas Temperature Sensor 3 Circuit Intermittent - AutoCodes.com — P242E Chevrolet Code - Exhaust Gas Temperature Sensor 3 Circuit Intermittent

What does this mean?

What are the Possible Causes of the DTC P242E Chevrolet?

Exhaust leaks
Faulty Exhaust Gas Temperature Sensor (EGTS) 3
Exhaust Gas Temperature Sensor 3 harness is open or shorted
Exhaust Gas Temperature Sensor 3 circuit poor electrical connection
Excessive particulate matter buildup on sensor
Faulty Engine Control Module (ECM)

How to Fix the DTC P242E Chevrolet?

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 P242E Chevrolet 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.

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Need more information on how to fix the P242E Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P242E Chevrolet 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 P242E Chevrolet Code

1. What are the common symptoms of OBDII code P242E in a Chevrolet related to the Exhaust Gas Temperature Sensor 3 circuit intermittent issue?

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

2. What are some possible causes of OBDII code P242E in a Chevrolet indicating an Exhaust Gas Temperature Sensor 3 circuit intermittent problem?

Possible causes include a faulty exhaust gas temperature sensor, damaged wiring or connectors, a blown fuse, or a problem with the engine control module (ECM).

3. How can I diagnose the OBDII code P242E in a Chevrolet related to the Exhaust Gas Temperature Sensor 3 circuit intermittent issue?

You can diagnose the issue by using an OBDII scanner to retrieve the trouble code, inspecting the wiring and connectors for damage, testing the sensor's resistance, and checking the ECM for any faults.

4. Can I drive my Chevrolet with the OBDII code P242E indicating an Exhaust Gas Temperature Sensor 3 circuit intermittent problem?

It is not recommended to drive your vehicle with this issue as it can lead to further damage and potential safety concerns. It is best to address the problem promptly.

5. What are some repair tips for fixing OBDII code P242E in a Chevrolet due to an Exhaust Gas Temperature Sensor 3 circuit intermittent fault?

Repair tips include replacing the faulty sensor, repairing or replacing damaged wiring and connectors, checking and replacing any blown fuses, and resetting the ECM after repairs are completed.

6. How much does it typically cost to repair OBDII code P242E in a Chevrolet caused by an Exhaust Gas Temperature Sensor 3 circuit intermittent issue?

The cost can vary depending on the exact cause of the problem, but it generally ranges from $150 to $400 for parts and labor at a repair shop.

7. Can a DIY enthusiast fix the OBDII code P242E in a Chevrolet related to an Exhaust Gas Temperature Sensor 3 circuit intermittent issue?

Yes, if you have the necessary tools and knowledge, you can attempt to fix this issue yourself by following repair guides or tutorials specific to your Chevrolet model.

8. Will resetting the check engine light resolve the OBDII code P242E in a Chevrolet associated with an Exhaust Gas Temperature Sensor 3 circuit intermittent problem?

Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the trouble code. It's important to diagnose and address the root cause of the problem.

9. How often does the OBDII code P242E occur in Chevrolet vehicles due to an Exhaust Gas Temperature Sensor 3 circuit intermittent issue?

The frequency of this code occurring can vary, but it is not uncommon in Chevrolet vehicles with faulty exhaust gas temperature sensors or related circuit problems.

10. Is it important to address OBDII code P242E in a Chevrolet caused by an Exhaust Gas Temperature Sensor 3 circuit intermittent issue promptly?

Yes, it is crucial to address this issue promptly to prevent further damage to the vehicle, ensure optimal engine performance, and maintain fuel efficiency.