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P2402 Toyota Code - Evaporative Emission Leak Detection Pump Stuck ON

Quick Answer

The P2402 diagnostic trouble code for Toyota vehicles indicates that the Evaporative Emission Leak Detection Pump is stuck ON. Common causes include Faulty Evaporative Emission Leak Detection Pump, Malfunctioning purge valve, Damaged hoses or connectors in the evaporative emissions system. 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
P2402 Toyota indicates Evaporative Emission Leak Detection Pump Stuck ON.
Common causes
Common causes include Faulty Evaporative Emission Leak Detection Pump, Malfunctioning purge valve, Damaged hoses or connectors in the evaporative emissions system.
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 Aug 30, 2024
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Code P2402 Toyota Description

The P2402 diagnostic trouble code for Toyota vehicles indicates that the Evaporative Emission Leak Detection Pump is stuck ON. This system is part of the vehicle's evaporative emissions control system, which is designed to capture and store fuel vapors from the fuel tank and prevent them from escaping into the atmosphere. When the Leak Detection Pump is stuck ON, it means that the system is constantly running, which can lead to increased fuel consumption, reduced engine performance, and potential emissions issues.

OBDII Code P2402 Toyota - Evaporative Emission Leak Detection Pump Stuck ON
P2402 Toyota Code - Evaporative Emission Leak Detection Pump Stuck ON

Common Causes of P2402 Toyota

  1. Faulty Evaporative Emission Leak Detection Pump.
  2. Malfunctioning purge valve.
  3. Damaged hoses or connectors in the evaporative emissions system.
  4. Leak in the evaporative emissions system.
  5. Electrical issue causing the system to stay ON.

Symptoms of P2402 Toyota

  1. Check engine light illuminated on the dashboard.
  2. Decreased fuel efficiency.
  3. Strong fuel odor near the vehicle.
  4. Rough idling or stalling when the vehicle is at a stop.
  5. Failed emissions test.

How to Fix P2402 Toyota

  1. Diagnose the specific cause of the issue using a scan tool.
  2. Inspect the Evaporative Emission Leak Detection Pump, purge valve, hoses, and connectors for any damage or leaks.
  3. Replace any faulty components identified during the inspection.
  4. Clear the diagnostic trouble code from the vehicle's computer and reset the system.
  5. Perform a test drive to ensure that the issue has been resolved and that the check engine light does not reappear.

Cost to Fix P2402 Toyota

The typical repair costs for addressing a P2402 code on a Toyota vehicle can range from $100 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that the diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as the vehicle make and model, location, and engine type can also impact the overall repair costs.

What does this mean?

Tech Notes for P2402 Toyota

There are Factory Service Bulletins for the following Toyota models:

2005–2006 Toyota Corolla
2005–2006 Toyota Matrix
2005–2006 Toyota Corolla, Matrix Factory Service Bulletin OBDII Code P2402

2006–2009 Toyota RAV4
2006–2009 Toyota RAV4 Factory Service Bulletin OBDII Code P2402
The service bulletin recommends replacing the EVAP Charcoal Canister Assembly to repair the problem.





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Information for Specific Toyota 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.

Frequently Asked Questions about P2402 Toyota Code

1. What does OBDII code P2402 for a Toyota mean?

The code P2402 indicates that the Evaporative Emission Leak Detection Pump is stuck ON in a Toyota vehicle.

2. What are the common symptoms of a P2402 code in a Toyota?

Common symptoms of the P2402 code include the check engine light being illuminated, decreased fuel efficiency, and potential difficulty starting the vehicle.

3. What are the potential causes of the P2402 code in a Toyota?

The P2402 code in a Toyota can be caused by a faulty Evaporative Emission Leak Detection Pump, damaged vacuum hoses, or a malfunctioning pressure sensor.

4. How serious is the P2402 code in a Toyota?

While the P2402 code may not cause immediate drivability issues, it can lead to increased emissions and reduced fuel efficiency if left unresolved.

5. How can I diagnose a P2402 code in my Toyota?

Diagnosing a P2402 code involves checking the Evaporative Emission Leak Detection Pump, inspecting vacuum hoses for leaks or damage, and testing the pressure sensor for proper operation.

6. Can I continue driving my Toyota with a P2402 code?

It is generally not recommended to drive the vehicle with a P2402 code for an extended period, as it can lead to environmental issues and potentially affect the performance of the vehicle.

7. How can I repair the P2402 code in my Toyota?

Repairing the P2402 code may involve replacing the Evaporative Emission Leak Detection Pump, repairing or replacing damaged vacuum hoses, or resetting the system after fixing any issues.

8. Will resetting the check engine light fix the P2402 code in my Toyota?

Simply resetting the check engine light will not fix the underlying issue causing the P2402 code. It is important to diagnose and repair the root cause of the problem.

9. Can a DIY enthusiast fix the P2402 code in a Toyota?

Depending on their skill level and access to tools, a DIY enthusiast may be able to address the P2402 code by following repair guides or seeking assistance from online resources.

10. How much does it cost to fix a P2402 code in a Toyota?

The cost of fixing a P2402 code in a Toyota can vary depending on the extent of the issue and whether professional help is needed. Expenses may include parts, labor, and diagnostic fees.

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