P2479 Code - Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
Quick Answer
The diagnostic trouble code P2479 indicates that the exhaust gas temperature is out of range for Bank 1 Sensor 2 in the vehicle's exhaust system. Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect temperature readings, Wiring Issues: Damaged or corroded wiring connecting the sensor to the ECM can cause communication issues, Exhaust System Leaks: Leaks in the exhaust system can affect the temperature readings by allowing outside air to enter the system. 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
- P2479 indicates Exhaust Gas Temperature Out of Range Bank 1 Sensor 2.
- Common causes
- Common causes include Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect temperature readings, Wiring Issues: Damaged or corroded wiring connecting the sensor to the ECM can cause communication issues, Exhaust System Leaks: Leaks in the exhaust system can affect the temperature readings by allowing outside air to enter the system.
- 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.
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Code P2479 Description
The diagnostic trouble code P2479 indicates that the exhaust gas temperature is out of range for Bank 1 Sensor 2 in the vehicle's exhaust system. This sensor is responsible for monitoring the temperature of the exhaust gases after they have passed through the catalytic converter. When the exhaust gas temperature is out of range, it can lead to various issues with the vehicle's performance and emissions.
Common Causes of P2479
- Faulty Exhaust Gas Temperature Sensor: The sensor itself may be malfunctioning, providing incorrect temperature readings.
- Wiring Issues: Damaged or corroded wiring connecting the sensor to the ECM can cause communication issues.
- Exhaust System Leaks: Leaks in the exhaust system can affect the temperature readings by allowing outside air to enter the system.
- Catalytic Converter Failure: A failing catalytic converter can impact the exhaust gas temperature readings.
- ECM Malfunction: A malfunctioning engine control module can also lead to incorrect temperature readings.
Symptoms of P2479
- Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced Fuel Efficiency: An out-of-range exhaust gas temperature can cause the engine to run less efficiently, leading to decreased fuel economy.
- Rough Idling: The engine may experience rough idling or hesitation during acceleration due to improper temperature readings.
- Increased Emissions: The vehicle may emit higher levels of pollutants due to the malfunctioning exhaust gas temperature sensor.
- Limp Mode: In severe cases, the vehicle may go into a limp mode to protect the engine from further damage.
How to Fix P2479
- Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and pinpoint the exact cause of the out-of-range exhaust gas temperature.
- Inspect the Sensor: Check the exhaust gas temperature sensor for any signs of damage or malfunction and replace if necessary.
- Check Wiring: Inspect the wiring harness for any damage or corrosion and repair or replace as needed.
- Repair Exhaust Leaks: Address any leaks in the exhaust system to ensure accurate temperature readings.
- Test and Reset: After making the necessary repairs, test the vehicle to ensure the issue has been resolved and reset the check engine light.
Cost to Fix P2479
The cost of repairing an out-of-range exhaust gas temperature issue can vary depending on the specific cause of the problem and the labor rates at the repair shop. Generally, the cost of replacing an exhaust gas temperature sensor can range from $150 to $300, including parts and labor. However, if the issue is related to wiring or exhaust system leaks, the cost can be higher. It is advisable to check with local repair shops for a more accurate estimate based on the vehicle's make and model. Additionally, diagnostic time and labor rates can vary, with rates typically ranging between $80 and $150 per hour.
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Code P2479 Information for Specific Makes
- P2479 Chevrolet — Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
- P2479 Dodge — Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
- P2479 Ford — Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
- P2479 GMC — Exhaust Gas Temperature Out of Range Bank 1 Sensor 2
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