AutoCodes – RAM – P242C RAM

P242C RAM Code - Exhaust Gas Temperature Sensor Circuit Low 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: P242C RAM indicates Exhaust Gas Temperature Sensor Circuit Low 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 1,062

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on May 20, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P242C RAM 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 P242C OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.

OBDII Code P242C RAM - Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3 - AutoCodes.com — P242C RAM Code - Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3

What does this mean?

What are the Possible Causes of the DTC P242C RAM?

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 P242C RAM?

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 P242C RAM 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 P242C RAM Code

1. What are the common symptoms of OBDII code P242C?

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

2. What does the OBDII code P242C indicate?

- The code P242C indicates a low circuit voltage from the Exhaust Gas Temperature (EGT) sensor located on Bank 1 Sensor 3.

3. What are the possible causes of the Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3 code?

- Possible causes include a faulty EGT sensor, damaged wiring or connectors, issues with the ECU, or exhaust system leaks.

4. How can I diagnose the P242C code?

- Diagnosis involves inspecting the EGT sensor for damage, checking the wiring and connectors for any issues, and using a diagnostic scanner to monitor sensor readings.

5. Can I drive my vehicle with the P242C code?

- It is not recommended to drive your vehicle with the P242C code as it can lead to further engine damage and potential safety hazards.

6. How can I repair the Exhaust Gas Temperature Sensor Circuit Low Bank 1 Sensor 3 issue?

- Repair options include replacing the faulty EGT sensor, repairing damaged wiring or connectors, and clearing the trouble code with a diagnostic tool.

7. Is it possible to reset the P242C code without fixing the underlying issue?

- While you can clear the code temporarily, the Check Engine Light is likely to reappear if the root cause of the problem is not addressed.

8. Can a DIY enthusiast fix the P242C code at home?

- Depending on the skill level, DIY enthusiasts can potentially replace the EGT sensor or repair wiring issues, but complex diagnostics may require professional help.

9. How much does it typically cost to repair the P242C code?

- Repair costs for the P242C code can vary based on the underlying issue, but expect to pay for parts and labor, with average costs ranging from $100 to $300.

10. Are there any preventative measures to avoid the P242C code in the future?

- Regular maintenance, such as inspecting the exhaust system components and addressing any issues promptly, can help prevent the recurrence of the P242C code.