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P2424 Nissan Code - HC Adsorption Catalyst Efficiency Below Threshold Bank 2

Quick Answer

The P2424 diagnostic trouble code (DTC) for Nissan vehicles refers to the HC Adsorption Catalyst Efficiency Below Threshold Bank 2. Common causes include Faulty HC Adsorption Catalyst: The catalyst itself may be damaged or worn out, leading to decreased efficiency, Oxygen Sensor Issues: Malfunctioning oxygen sensors can provide inaccurate readings to the ECM, affecting the catalyst's performance, Exhaust System Leaks: Leaks in the exhaust system can allow unburned hydrocarbons to escape before reaching the catalyst, reducing its efficiency. 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
P2424 Nissan indicates HC Adsorption Catalyst Efficiency Below Threshold Bank 2.
Common causes
Common causes include Faulty HC Adsorption Catalyst: The catalyst itself may be damaged or worn out, leading to decreased efficiency, Oxygen Sensor Issues: Malfunctioning oxygen sensors can provide inaccurate readings to the ECM, affecting the catalyst's performance, Exhaust System Leaks: Leaks in the exhaust system can allow unburned hydrocarbons to escape before reaching the catalyst, reducing its efficiency.
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 07, 2024
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Code P2424 Nissan Description

The P2424 diagnostic trouble code (DTC) for Nissan vehicles refers to the HC Adsorption Catalyst Efficiency Below Threshold Bank 2. This code indicates that there is an issue with the efficiency of the hydrocarbon (HC) adsorption catalyst in the second bank of the vehicle's exhaust system. The adsorption catalyst is responsible for reducing harmful emissions by converting hydrocarbons into less harmful byproducts. When the efficiency of the catalyst falls below the threshold set by the vehicle's engine control module (ECM), the P2424 code is triggered.

OBDII Code P2424 Nissan - HC Adsorption Catalyst Efficiency Below Threshold Bank 2
P2424 Nissan Code - HC Adsorption Catalyst Efficiency Below Threshold Bank 2

Common Causes of P2424 Nissan

  1. Faulty HC Adsorption Catalyst: The catalyst itself may be damaged or worn out, leading to decreased efficiency.
  2. Oxygen Sensor Issues: Malfunctioning oxygen sensors can provide inaccurate readings to the ECM, affecting the catalyst's performance.
  3. Exhaust System Leaks: Leaks in the exhaust system can allow unburned hydrocarbons to escape before reaching the catalyst, reducing its efficiency.
  4. Engine Misfires: Engine misfires can result in an increase in unburned hydrocarbons reaching the catalyst, affecting its ability to convert them effectively.

Symptoms of P2424 Nissan

  1. Check Engine Light: The most common symptom associated with the P2424 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: A decrease in fuel efficiency may be noticed due to the inefficient conversion of hydrocarbons by the catalyst.
  3. Decreased Engine Performance: The vehicle may experience a lack of power or sluggish acceleration as a result of the catalyst not functioning properly.
  4. Increased Emissions: There may be an increase in emissions coming from the vehicle's exhaust due to the inefficient conversion of hydrocarbons.

How to Fix P2424 Nissan

  1. Diagnostic Testing: Use a scan tool to retrieve the DTC and perform diagnostic tests to pinpoint the exact cause of the issue.
  2. Inspect Catalyst: Check the HC adsorption catalyst for any signs of damage or wear and replace if necessary.
  3. Check Oxygen Sensors: Inspect the oxygen sensors for proper operation and replace any faulty sensors.
  4. Repair Exhaust Leaks: Identify and repair any leaks in the exhaust system to prevent unburned hydrocarbons from escaping.
  5. Address Engine Misfires: If engine misfires are detected, address the underlying cause to prevent excessive hydrocarbons from reaching the catalyst.

Cost to Fix P2424 Nissan

The cost of repairing a P2424 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing an HC adsorption catalyst can range from $500 to $1500, including parts and labor. Keep in mind that additional costs may be incurred if other components such as oxygen sensors or exhaust system components need to be replaced. It is recommended to consult with a qualified mechanic or repair shop for a more accurate estimate based on your vehicle's make and model.

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Information for Specific Nissan Models

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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