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Engine-Codes – Generic – P2484

P2484 Code - Exhaust Gas Temperature Sensor 5 Circuit Intermittent

Quick Answer

The P2484 diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Temperature (EGT) Sensor 5 Circuit Intermittent. Common causes include Faulty EGT Sensor: The EGT sensor itself may be faulty and require replacement, Damaged Wiring: Wiring or connectors in the EGT sensor circuit may be damaged, causing intermittent signal issues, ECM Malfunction: A malfunctioning ECM can also trigger the P2484 code by not properly interpreting the EGT sensor data. 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
P2484 indicates Exhaust Gas Temperature Sensor 5 Circuit Intermittent.
Common causes
Common causes include Faulty EGT Sensor: The EGT sensor itself may be faulty and require replacement, Damaged Wiring: Wiring or connectors in the EGT sensor circuit may be damaged, causing intermittent signal issues, ECM Malfunction: A malfunctioning ECM can also trigger the P2484 code by not properly interpreting the EGT sensor data.
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 16, 2024
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Code P2484 Description

The P2484 diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Temperature (EGT) Sensor 5 Circuit Intermittent. This sensor is responsible for monitoring the exhaust gas temperature in the vehicle's exhaust system. The EGT sensor provides crucial data to the engine control module (ECM) to ensure optimal fuel combustion and emissions control. When the ECM detects an intermittent signal from the EGT Sensor 5 circuit, it triggers the P2484 code.

OBDII Code P2484 - Exhaust Gas Temperature Sensor 5 Circuit Intermittent
P2484 Code - Exhaust Gas Temperature Sensor 5 Circuit Intermittent

Common Causes of P2484

  1. Faulty EGT Sensor: The EGT sensor itself may be faulty and require replacement.
  2. Damaged Wiring: Wiring or connectors in the EGT sensor circuit may be damaged, causing intermittent signal issues.
  3. ECM Malfunction: A malfunctioning ECM can also trigger the P2484 code by not properly interpreting the EGT sensor data.
  4. Exhaust System Leaks: Leaks in the exhaust system can affect the EGT sensor readings and trigger the code.
  5. Extreme Temperature Conditions: Extreme temperature conditions can also impact the EGT sensor's performance and trigger the code.

Symptoms of P2484

  1. Check Engine Light: The most common symptom associated with the P2484 code is the illumination of the check engine light on the dashboard.
  2. Decreased Fuel Efficiency: A malfunctioning EGT sensor can lead to poor fuel combustion, resulting in decreased fuel efficiency.
  3. Engine Misfires: The ECM relies on data from the EGT sensor to adjust fuel delivery, so a faulty sensor can cause engine misfires.
  4. Rough Idling: An intermittent EGT sensor signal can cause the engine to idle roughly or inconsistently.
  5. Increased Emissions: A malfunctioning EGT sensor can lead to increased emissions due to improper fuel combustion.

How to Fix P2484

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the P2484 code and perform a thorough inspection of the EGT sensor and its circuit.
  2. Replace EGT Sensor: If the sensor is faulty, replace it with a new one following manufacturer guidelines.
  3. Repair Wiring: Inspect the wiring and connectors in the EGT sensor circuit for damage and repair or replace as needed.
  4. Check ECM: Ensure the ECM is functioning correctly and reprogram if necessary to address any issues.
  5. Clear Codes: Clear the DTC with a diagnostic scanner after completing the repair to reset the check engine light.

Cost to Fix P2484

The cost of repairing a P2484 code can vary depending on the specific vehicle make and model, as well as the location and labor rates of the auto repair shop. Typically, the cost of replacing an EGT sensor can range from $150 to $300, including parts and labor. Additional costs may apply if wiring repairs or ECM reprogramming are necessary. It's advisable to consult with a professional mechanic to get an accurate estimate based on your vehicle's specific requirements and local labor rates.

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Code P2484 Information for Specific Makes

  • P2484 Buick — Exhaust Gas Temperature Sensor 5 Circuit Intermittent
  • P2484 Cadillac — Exhaust Gas Temperature Sensor 5 Circuit Intermittent
  • P2484 Chevrolet — Exhaust Gas Temperature Sensor 5 Circuit Intermittent
  • P2484 Dodge — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5
  • P2484 Ford — Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 5
  • P2484 GMC — Exhaust Gas Temperature Sensor 5 Circuit Intermittent
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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