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Engine-Codes – Generic – P247A

P247A Code - Exhaust Gas Temperature Out of Range Bank 1 Sensor 3

Quick Answer

The diagnostic trouble code P247A indicates that the exhaust gas temperature (EGT) is out of range for Bank 1 Sensor 3. Common causes include Faulty EGT Sensor: The most common cause of this code is a malfunctioning EGT sensor, which may need to be replaced, Wiring Issues: Damaged or corroded wiring connecting the EGT sensor to the engine control module can lead to inaccurate temperature readings, Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's ability to measure the temperature accurately. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P247A indicates Exhaust Gas Temperature Out of Range Bank 1 Sensor 3.
Common causes
Common causes include Faulty EGT Sensor: The most common cause of this code is a malfunctioning EGT sensor, which may need to be replaced, Wiring Issues: Damaged or corroded wiring connecting the EGT sensor to the engine control module can lead to inaccurate temperature readings, Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's ability to measure the temperature accurately.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 26, 2024
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Code P247A Description

The diagnostic trouble code P247A indicates that the exhaust gas temperature (EGT) is out of range for Bank 1 Sensor 3. This sensor is responsible for monitoring the temperature of the exhaust gas as it exits the engine. When the EGT is out of range, it can lead to various issues with the vehicle's performance and emissions.

OBDII Code P247A - Exhaust Gas Temperature Out of Range Bank 1 Sensor 3
P247A Code - Exhaust Gas Temperature Out of Range Bank 1 Sensor 3

Common Causes of P247A

  1. Faulty EGT Sensor: The most common cause of this code is a malfunctioning EGT sensor, which may need to be replaced.
  2. Wiring Issues: Damaged or corroded wiring connecting the EGT sensor to the engine control module can lead to inaccurate temperature readings.
  3. Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor's ability to measure the temperature accurately.
  4. Exhaust Gas Recirculation (EGR) System Malfunction: Problems with the EGR system can impact the exhaust gas temperature readings.
  5. Engine Tune-Up: Poor engine performance or misfires can also trigger this code if they affect the exhaust gas temperature.

Symptoms of P247A

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Reduced Engine Performance: The vehicle may experience a decrease in power and acceleration due to incorrect temperature readings.
  3. Poor Fuel Efficiency: An out-of-range EGT sensor can lead to inefficient fuel combustion, resulting in decreased fuel economy.
  4. Increased Emissions: Incorrect exhaust gas temperature readings can cause the vehicle to emit higher levels of pollutants into the environment.
  5. Rough Idle: The engine may exhibit rough idling or stalling due to the irregular temperature readings.

How to Fix P247A

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the EGT sensor and related components.
  2. Replace EGT Sensor: If the sensor is found to be faulty, replace it with a new one following the manufacturer's guidelines.
  3. Check Wiring: Inspect the wiring harness for any damage or corrosion and repair or replace as necessary.
  4. Repair Exhaust Leaks: Address any leaks in the exhaust system that may be affecting the EGT sensor's readings.
  5. Perform ECU Reset: After completing the repairs, reset the engine control unit (ECU) to clear the trouble code and monitor the system for any recurring issues.

Cost to Fix P247A

The cost of repairing the exhaust gas temperature out of range issue can vary depending on the specific cause of the problem and the vehicle's make and model. On average, the parts for replacing the EGT sensor can range from $50 to $200, while the labor costs can be between $100 and $200. Overall, the total repair cost may fall between $150 and $400, but it is advisable to consult with a professional mechanic for a more accurate estimate based on your vehicle's requirements and local labor rates. Keep in mind that diagnostic time and labor rates can vary, so it's essential to inquire about these factors when seeking repairs at an auto repair shop.

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Code P247A Information for Specific Makes

  • P247A Chevrolet — Exhaust Gas Temperature Out of Range Bank 1 Sensor 3
  • P247A Dodge — Exhaust Gas Temperature Out of Range Bank 1 Sensor 3
  • P247A Ford — Exhaust Gas Temperature Out of Range Bank 1 Sensor 3
  • P247A GMC — Exhaust Gas Temperature Out of Range 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.

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