AutoCodes – Chevrolet – P242B Chevrolet

P242B Chevrolet Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3

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 3, Exhaust Gas Temperature Sensor Bank 1 Sensor 3 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 3 circuit poor electrical connection. 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
P242B Chevrolet indicates Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3.
Common causes
Common causes include Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 3, Exhaust Gas Temperature Sensor Bank 1 Sensor 3 harness is open or shorted, Exhaust Gas Temperature Sensor Bank 1 Sensor 3 circuit poor electrical connection.
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 5,893
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 15, 2019
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Code P242B Chevrolet 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 P242B OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P242B Chevrolet - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3 - AutoCodes.com
P242B Chevrolet Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3

What are the Possible Causes of the DTC P242B Chevrolet?

  • Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 3
  • Exhaust Gas Temperature Sensor Bank 1 Sensor 3 harness is open or shorted
  • Exhaust Gas Temperature Sensor Bank 1 Sensor 3 circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

How to Fix the DTC P242B 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 P242B 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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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 P242B Chevrolet Code

1. What are common symptoms of OBDII code P242B in a Chevrolet related to the Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3?

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

2. What are the possible causes of OBDII code P242B in a Chevrolet?

- Possible causes include a faulty exhaust gas temperature sensor, wiring issues, sensor circuit problems, or issues with the engine control module (ECM).

3. How can I diagnose the OBDII code P242B in a Chevrolet?

- Diagnosing the code involves using a scan tool to read the fault codes stored in the ECM, testing the exhaust gas temperature sensor, checking the sensor circuit for continuity, and inspecting the wiring for any damage.

4. Is it safe to continue driving with OBDII code P242B in a Chevrolet?

- It is not recommended to drive with this code present, as it can lead to potential engine damage and further issues if left unresolved.

5. How can I repair OBDII code P242B in a Chevrolet?

- Repair options may include replacing the exhaust gas temperature sensor, repairing any damaged wiring or connections, or resetting the ECM after fixing the underlying issue.

6. Are there any DIY tips for addressing OBDII code P242B in a Chevrolet?

- DIY tips may include double-checking all connections, ensuring proper sensor installation, and following manufacturer's guidelines when replacing parts.

7. Can a malfunctioning exhaust gas temperature sensor cause other problems in a Chevrolet?

- Yes, a malfunctioning sensor can lead to incorrect fuel mixture, reduced engine performance, and potential damage to other components if not addressed promptly.

8. How long does it typically take to repair OBDII code P242B in a Chevrolet?

- The repair time can vary depending on the exact cause of the issue, but it may take anywhere from half an hour to a few hours to diagnose and fix the problem.

9. Should I reset the check engine light after repairing OBDII code P242B in a Chevrolet?

- Yes, it is recommended to reset the check engine light after making repairs to ensure that the issue has been resolved and to monitor for any new problems.

10. Can a regular maintenance schedule help prevent OBDII code P242B from occurring in a Chevrolet?

- Yes, regular maintenance, including checking sensors and wiring during tune-ups, can help prevent issues like OBDII code P242B from occurring in a Chevrolet.

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