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Engine-Codes – Generic – P2474

P2474 Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4

Quick Answer

The P2474 diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 2 Sensor 4. Common causes include Faulty EGT Sensor: The most common cause of the P2474 code is a malfunctioning or failed EGT sensor, Wiring Issues: Damaged or corroded wiring connections to the EGT sensor can lead to erratic readings and trigger the code, Exhaust System Leaks: Leaks in the exhaust system before or after the EGT sensor can affect its performance and trigger the code. 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
P2474 indicates Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4.
Common causes
Common causes include Faulty EGT Sensor: The most common cause of the P2474 code is a malfunctioning or failed EGT sensor, Wiring Issues: Damaged or corroded wiring connections to the EGT sensor can lead to erratic readings and trigger the code, Exhaust System Leaks: Leaks in the exhaust system before or after the EGT sensor can affect its performance and trigger the code.
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 17, 2024
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Code P2474 Description

The P2474 diagnostic trouble code (DTC) refers to an issue with the Exhaust Gas Temperature (EGT) Sensor Circuit for Bank 2 Sensor 4. This sensor is responsible for monitoring the exhaust gas temperature in the exhaust system. The EGT sensor plays a crucial role in ensuring the engine operates at optimal efficiency and emissions levels. When the EGT sensor detects a temperature that is outside the expected range or if the sensor's performance is not up to par, the P2474 code is triggered.

OBDII Code P2474 - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
P2474 Code - Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4

Common Causes of P2474

  1. Faulty EGT Sensor: The most common cause of the P2474 code is a malfunctioning or failed EGT sensor.
  2. Wiring Issues: Damaged or corroded wiring connections to the EGT sensor can lead to erratic readings and trigger the code.
  3. Exhaust System Leaks: Leaks in the exhaust system before or after the EGT sensor can affect its performance and trigger the code.
  4. ECM Software Issues: Software glitches or errors in the engine control module (ECM) can also cause the P2474 code to be set.

Symptoms of P2474

  1. Check Engine Light: The most common symptom associated with the P2474 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Engine Performance: The engine may experience reduced power, hesitation, or rough idling due to incorrect EGT sensor readings.
  3. Increased Fuel Consumption: A faulty EGT sensor can cause the engine to run inefficiently, leading to higher fuel consumption.
  4. Poor Emissions: The vehicle may fail emissions tests or emit higher levels of pollutants due to inaccurate exhaust gas temperature readings.

How to Fix P2474

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble code and perform a thorough inspection of the EGT sensor, wiring, and exhaust system for any visible damage.
  2. Replace EGT Sensor: If the sensor is found to be faulty, replace it with a new, OEM-quality sensor compatible with the vehicle's make and model.
  3. Repair Wiring: Repair or replace any damaged wiring connections leading to the EGT sensor to ensure proper electrical continuity.
  4. Clear Codes: After completing the repair, clear the trouble codes from the ECM memory using the diagnostic scanner to reset the check engine light.
  5. Test Drive: Take the vehicle for a test drive to ensure the issue has been resolved and the check engine light does not reappear.

Cost to Fix P2474

The cost of repairing the P2474 code can vary depending on the vehicle make and model, the location of the repair shop, and the cost of parts and labor. On average, the repair for this issue can range from $200 to $500, including the cost of a new EGT sensor and any additional parts or labor. It is advisable to consult with a qualified mechanic or repair shop to get an accurate estimate based on the specific circumstances of the vehicle. Keep in mind that diagnostic time and labor rates can vary, so it's recommended to inquire about these details before proceeding with the repair.

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Code P2474 Information for Specific Makes

  • P2474 Chevrolet — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
  • P2474 Dodge — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
  • P2474 Ford — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
  • P2474 GMC — Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 4
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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