Engine-CodesGeneric – P2482

P2482 Code - Exhaust Gas Temperature Sensor 5 Circuit High Voltage

Quick Answer

The diagnostic trouble code P2482 indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 5 Circuit High Voltage in the vehicle's exhaust system. Common causes include Faulty EGT Sensor: The sensor itself may be malfunctioning, leading to incorrect temperature readings, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the EGT sensor can cause high voltage readings, ECM Malfunction: A problem with the engine control module can also trigger this code by sending incorrect signals to the EGT sensor. 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
P2482 indicates Exhaust Gas Temperature Sensor 5 Circuit High Voltage.
Common causes
Common causes include Faulty EGT Sensor: The sensor itself may be malfunctioning, leading to incorrect temperature readings, Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the EGT sensor can cause high voltage readings, ECM Malfunction: A problem with the engine control module can also trigger this code by sending incorrect signals to the EGT sensor.
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.
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code P2482 Description

The diagnostic trouble code P2482 indicates a problem with the Exhaust Gas Temperature (EGT) Sensor 5 Circuit High Voltage in the vehicle's exhaust system. This sensor is responsible for monitoring the temperature of the exhaust gases and providing feedback to the engine control module (ECM) to help optimize fuel efficiency and reduce emissions.

OBDII Code P2482 - Exhaust Gas Temperature Sensor 5 Circuit High Voltage
P2482 Code - Exhaust Gas Temperature Sensor 5 Circuit High Voltage

Common Causes of P2482

  1. Faulty EGT Sensor: The sensor itself may be malfunctioning, leading to incorrect temperature readings.
  2. Wiring Issues: Corrosion, damage, or loose connections in the wiring harness connected to the EGT sensor can cause high voltage readings.
  3. ECM Malfunction: A problem with the engine control module can also trigger this code by sending incorrect signals to the EGT sensor.
  4. Exhaust System Leak: An exhaust system leak near the EGT sensor can cause heat to affect the sensor's readings.
  5. Overheating Engine: Engine overheating can also lead to high exhaust gas temperatures, triggering this code.

Symptoms of P2482

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: High exhaust gas temperatures can impact the engine's efficiency, leading to decreased fuel economy.
  3. Rough Idle: The engine may experience rough idling or stalling due to incorrect temperature readings.
  4. Increased Emissions: A faulty EGT sensor can result in higher emissions output from the vehicle.
  5. Loss of Power: In severe cases, the vehicle may experience a loss of power or acceleration due to the incorrect temperature readings affecting engine performance.

How to Fix P2482

  1. Diagnostic Testing: Begin by using a diagnostic scanner to confirm the P2482 code and pinpoint the exact cause of the issue.
  2. EGT Sensor Replacement: 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, corrosion, or loose connections. Repair or replace as needed.
  4. ECM Reset: Reset the engine control module to clear the code and see if the issue persists. If it does, further diagnosis may be required.
  5. Exhaust System Inspection: Check the exhaust system for leaks and repair any damaged components that may be affecting the EGT sensor readings.

Cost to Fix P2482

The cost of repairing the Exhaust Gas Temperature Sensor 5 Circuit High Voltage issue can vary depending on the make and model of the vehicle, the location of the repair shop, and the labor rates. In general, replacing the EGT sensor and addressing any wiring issues may cost between $200 and $500, including parts and labor. However, it's recommended to obtain a specific quote from a local auto repair shop to get an accurate estimate based on your vehicle's needs. Keep in mind that diagnostic time and labor rates can impact the final cost of the repair.

Tech Notes for P2482

After starting the engine, the exhaust gas temperature sensor temperature should rise steadily, then stabilize after the engine reaches operating temperature. Exhaust gas temperature sensors may fail intermittently while operating under extreme temperatures. Review the Freeze Frame/Failure Records to verify the failure criteria.

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Code P2482 Information for Specific Makes

  • P2482 Chevrolet — Exhaust Gas Temperature Sensor 5 Circuit High Voltage
  • P2482 Dodge — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5
  • P2482 Ford — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5
  • P2482 GMC — Exhaust Gas Temperature Sensor Circuit High Bank 1 Sensor 5
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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