AutoCodes – Generic – P242B

P242B 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 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 48,047
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Jan 15, 2019
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Code P242B 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 - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3 - AutoCodes.com
P242B Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3

What are the Possible Causes of the DTC P242B?

  • 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?

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 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 P242B code?

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Need Help with the Code?

Get the P242B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P242B Chevrolet β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
  • P242B Dodge β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
  • P242B Ford β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
  • P242B GMC β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
  • P242B Lincoln β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
  • P242B Mercury β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
  • P242B RAM β€” Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 3
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 Code

1. What are the common symptoms of OBDII code P242B?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the Check Engine Light.

2. What does the OBDII code P242B indicate?

- The code P242B indicates an issue with the Exhaust Gas Temperature Sensor Circuit Range/Performance on Bank 1 Sensor 3.

3. What are the possible causes of OBDII code P242B?

- Possible causes include a faulty exhaust gas temperature sensor, wiring or connector issues, exhaust system leaks, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose the cause of OBDII code P242B?

- Diagnosing the issue may involve checking the exhaust gas temperature sensor, inspecting the wiring and connectors for damage, conducting a smoke test for exhaust leaks, and using a scan tool to monitor sensor data.

5. How do I repair OBDII code P242B?

- Repair involves addressing the root cause, such as replacing the faulty exhaust gas temperature sensor, repairing any damaged wiring or connectors, fixing exhaust leaks, or reprogramming the PCM if necessary.

6. Can I drive my vehicle with OBDII code P242B?

- It is not recommended to drive with the code unresolved, as it can lead to further damage and decreased performance. It's best to address the issue promptly.

7. How much does it cost to fix OBDII code P242B?

- The cost of fixing the issue can vary depending on the specific cause and the labor rates of the repair shop. It's recommended to get a diagnostic from a professional to determine the exact cost.

8. Can OBDII code P242B cause damage to my vehicle?

- Ignoring the code can potentially lead to increased emissions, reduced fuel efficiency, and engine damage over time. It's important to address the issue to prevent further problems.

9. Is OBDII code P242B a common issue in vehicles?

- While not as common as some other OBDII codes, P242B can occur in vehicles with exhaust gas temperature sensors. Proper maintenance and timely repairs can help prevent this issue.

10. How long does it take to repair OBDII code P242B?

- The repair time can vary based on the specific cause and complexity of the issue. Some repairs may be completed quickly, while others could take longer to diagnose and fix.

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