AutoCodes – RAM – P242D RAM

P242D RAM Code - Exhaust Gas Temperature Sensor Circuit High 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
P242D RAM indicates Exhaust Gas Temperature Sensor Circuit High 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 1,544
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 20, 2021
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Code P242D 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 P242D OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P242D RAM - Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3 - AutoCodes.com
P242D RAM Code - Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 3

What are the Possible Causes of the DTC P242D 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 P242D 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 P242D 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 P242D RAM Code

1. What does the OBDII code P242D mean?

P242D indicates a high voltage issue in the exhaust gas temperature (EGT) sensor circuit for Bank 1 Sensor 3, typically caused by a malfunctioning sensor or wiring problem.

2. What are the symptoms of the P242D code?

Common symptoms include an illuminated check engine light, decreased fuel efficiency, poor engine performance, and, in some cases, the vehicle entering limp mode.

3. What causes the P242D code to appear?

The code is commonly caused by a faulty EGT sensor, damaged wiring or connectors, excessive soot buildup, or an issue with the engine control module (ECM).

4. How do you diagnose the P242D code?

Diagnosing involves using an OBDII scanner to confirm the code, inspecting the EGT sensor and its wiring for damage, and performing resistance and voltage tests on the sensor.

5. Can you drive with a P242D code?

Driving with a P242D code is not recommended, as it can affect engine efficiency and emissions, and prolonged operation may lead to further damage.

6. How do you fix the P242D code?

Repairs typically involve replacing the faulty EGT sensor, repairing or replacing damaged wiring, cleaning excessive soot buildup, or reprogramming the ECM if necessary.

7. What is the function of Bank 1 Sensor 3 in the exhaust system?

Bank 1 Sensor 3 monitors exhaust gas temperatures downstream of the catalytic converter to ensure proper emissions control and prevent overheating.

8. How much does it cost to fix the P242D code?

Repair costs vary but typically range from $100 to $300, depending on whether the fix involves replacing the sensor, repairing wiring, or addressing related issues.

9. Can a dirty catalytic converter cause a P242D code?

Yes, excessive soot or debris in the catalytic converter can lead to abnormal exhaust gas temperatures, potentially triggering the P242D code.

10. Will clearing the P242D code fix the problem?

Clearing the code will temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.

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