AutoCodes – Toyota – P2402 Toyota

P2402 Toyota Code - Evaporative Emission Leak Detection Pump Stuck ON

Quick Answer

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. Common causes include Faulty Canister Pump Module, Canister Pump Module harness is open or shorted, Canister Pump Module circuit poor electrical connection. 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 Canister Pump Module, Canister Pump Module harness is open or shorted, Canister Pump Module circuit poor electrical connection.
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.

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Code Popularity 47,912

How popular is this code, among other codes? Medium

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 26, 2024

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P2402 Toyota Description

5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. The leak detection pump creates negative pressure through the reference orifice. When the system is normal, the EVAP pressure is between 97 to 100 kPa(abs) [726 to 750 mmHg(abs) (Typical value)] and saturated within a minute. If not, the ECM interprets this as a malfunction. The ECM illuminates the MIL and stores a Diagnostic Trouble Code (DTC) if this malfunction is detected in consecutive drive cycles. The Canister Pump Module is attached to the EVAP Canister and contains the Canister Pressure Sensor, the Leak Detection Pump, and the Vent Valve.

OBDII Code P2402 Toyota - Evaporative Emission Leak Detection Pump Stuck ON - AutoCodes.com — P2402 Toyota Code - Evaporative Emission Leak Detection Pump Stuck ON

What does this mean?

What are the Possible Causes of the DTC P2402 Toyota?

Faulty Canister Pump Module
Canister Pump Module harness is open or shorted
Canister Pump Module circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P2402 Toyota?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2402 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2402 Toyota code?

Need more information on how to fix the P2402 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2402 Toyota code diagnosed by a professional: Find a repair shop in your area

Information for Specific Toyota Models

P2402 2006 Toyota Camry — EVAP System Leak Detection Pump Control Circuit High
P2402 2007 Toyota Camry — EVAP System Leak Detection Pump Control Circuit High
P2402 2008 Toyota Camry — EVAP System Leak Detection Pump Control Circuit High
P2402 2009 Toyota Camry — EVAP System Leak Detection Pump Control Circuit High
P2402 2010 Toyota Camry — EVAP System Leak Detection Pump Control Circuit High
P2402 2011 Toyota Camry — EVAP System Leak Detection Pump Control Circuit High
P2402 2001 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2002 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2003 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2004 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2005 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2006 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2007 Toyota Highlander — EVAP System Leak Detection Pump Control Circuit High
P2402 2004 Toyota Prius — EVAP System Leak Detection Pump Control Circuit High
P2402 2005 Toyota Prius — EVAP System Leak Detection Pump Control Circuit High
P2402 2006 Toyota Prius — EVAP System Leak Detection Pump Control Circuit High
P2402 2007 Toyota Prius — EVAP System Leak Detection Pump Control Circuit High
P2402 2008 Toyota Prius — EVAP System Leak Detection Pump Control Circuit High
P2402 2009 Toyota Prius — EVAP System Leak Detection Pump Control Circuit High
P2402 2013 Toyota RAV4 — Evaporative Emission Leak Detection Pump Stuck ON
P2402 2014 Toyota RAV4 — Evaporative Emission Leak Detection Pump Stuck ON
P2402 2015 Toyota RAV4 — Evaporative Emission Leak Detection Pump Stuck ON
P2402 2016 Toyota RAV4 — Evaporative Emission Leak Detection Pump Stuck ON
P2402 2017 Toyota RAV4 — Evaporative Emission Leak Detection Pump Stuck ON
P2402 2018 Toyota RAV4 — Evaporative Emission Leak Detection Pump Stuck ON

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.