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Engine-Codes – Generic – P2428

P2428 Code - Exhaust Gas Temperature Too High Bank 1

Quick Answer

The P2428 code indicates that the exhaust gas temperature on Bank 1 is too high. Common causes include Faulty oxygen sensor, Malfunctioning catalytic converter, Exhaust system leaks. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P2428 indicates Exhaust Gas Temperature Too High Bank 1.
Common causes
Common causes include Faulty oxygen sensor, Malfunctioning catalytic converter, Exhaust system leaks.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P2428 Description

The P2428 code indicates that the exhaust gas temperature on Bank 1 is too high. This can be a serious issue as it may lead to damage to the catalytic converter, oxygen sensors, and other components of the exhaust system. The exhaust gas temperature is closely monitored by the vehicle's engine control module (ECM) to ensure optimal performance and fuel efficiency. When the temperature on Bank 1 exceeds the specified limit, it triggers this diagnostic trouble code (DTC).

OBDII Code P2428 - Exhaust Gas Temperature Too High Bank 1
P2428 Code - Exhaust Gas Temperature Too High Bank 1

Common Causes of P2428

  1. Faulty oxygen sensor
  2. Malfunctioning catalytic converter
  3. Exhaust system leaks
  4. Issues with the fuel injection system
  5. Engine misfire

Symptoms of P2428

  1. Decreased fuel efficiency
  2. Check Engine Light illuminated
  3. Rough idling or stalling
  4. Reduced engine performance
  5. Unusual smells coming from the exhaust system

How to Fix P2428

  1. Diagnose the root cause of the high exhaust gas temperature by using a scan tool to check for other related codes and performing a visual inspection of the exhaust system.
  2. Inspect the oxygen sensor and catalytic converter for any signs of damage or malfunction. Replace any faulty components.
  3. Check for exhaust leaks and repair or replace any damaged gaskets or seals.
  4. Test the fuel injection system for proper operation and address any issues found.
  5. Clear the DTC and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2428

The cost of repairing the P2428 code can vary depending on the specific cause of the issue and the make and model of the vehicle. On average, the repair costs for this issue can range from $200 to $800, including parts and labor. It's important to note that the actual cost may be higher or lower based on the factors mentioned earlier. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate.

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Code P2428 Information for Specific Makes

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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