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Engine-Codes – Toyota – P2402 2007 Toyota Highlander

P2402 2007 Toyota Highlander Code - EVAP System Leak Detection Pump Control Circuit High

Quick Answer

The P2402 diagnostic trouble code for a 2007 Toyota Highlander relates to the EVAP (Evaporative Emission Control System) System Leak Detection Pump Control Circuit registering a high voltage. Common causes include Faulty Leak Detection Pump: The pump responsible for detecting leaks in the EVAP system may be malfunctioning, leading to the high voltage reading, Wiring Issues: Damaged or corroded wiring connections in the control circuit can cause electrical faults and trigger the P2402 code, Faulty EVAP System Components: Issues with other components of the EVAP system, such as the purge valve or canister, can also lead to this code. 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 2007 Toyota Highlander indicates EVAP System Leak Detection Pump Control Circuit High.
Common causes
Common causes include Faulty Leak Detection Pump: The pump responsible for detecting leaks in the EVAP system may be malfunctioning, leading to the high voltage reading, Wiring Issues: Damaged or corroded wiring connections in the control circuit can cause electrical faults and trigger the P2402 code, Faulty EVAP System Components: Issues with other components of the EVAP system, such as the purge valve or canister, can also lead to this code.
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 11, 2024
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Code P2402 2007 Toyota Highlander Description

The P2402 diagnostic trouble code for a 2007 Toyota Highlander relates to the EVAP (Evaporative Emission Control System) System Leak Detection Pump Control Circuit registering a high voltage. This indicates a malfunction in the circuit that controls the leak detection pump, which is responsible for monitoring the integrity of the fuel vapor system. The EVAP system plays a crucial role in reducing harmful emissions by capturing and storing fuel vapors before they can escape into the atmosphere.

OBDII Code P2402 2007 Toyota Highlander - EVAP System Leak Detection Pump Control Circuit High
P2402 2007 Toyota Highlander Code - EVAP System Leak Detection Pump Control Circuit High

Common Causes of P2402 2007 Toyota Highlander

  1. Faulty Leak Detection Pump: The pump responsible for detecting leaks in the EVAP system may be malfunctioning, leading to the high voltage reading.
  2. Wiring Issues: Damaged or corroded wiring connections in the control circuit can cause electrical faults and trigger the P2402 code.
  3. Faulty EVAP System Components: Issues with other components of the EVAP system, such as the purge valve or canister, can also lead to this code.
  4. ECM Malfunction: A malfunction in the Engine Control Module (ECM) can incorrectly interpret data from the EVAP system, triggering the P2402 code.
  5. Fuel Cap Seal: A loose or damaged fuel cap seal can cause the system to not seal properly, leading to a possible leak and the code being triggered.

Symptoms of P2402 2007 Toyota Highlander

  1. Check Engine Light: The most common symptom associated with the P2402 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Decreased Fuel Efficiency: A malfunction in the EVAP system can lead to increased fuel consumption as the engine may not be running optimally.
  3. Rough Idle: The engine may experience rough idling or hesitation during acceleration due to the EVAP system malfunction.
  4. Smell of Fuel: A strong smell of fuel inside or outside the vehicle could indicate a leak in the fuel vapor system.
  5. Failed Emissions Test: If the vehicle is subjected to an emissions test, it may fail due to increased emissions caused by the EVAP system fault.

How to Fix P2402 2007 Toyota Highlander

  1. Diagnose the Issue: Use an OBD-II scanner to retrieve the trouble code and perform a thorough inspection of the EVAP system components to pinpoint the exact cause of the fault.
  2. Replace Faulty Components: Replace any faulty components identified during the diagnosis, such as the leak detection pump, wiring harness, or EVAP system components.
  3. Clear Fault Codes: After repairing or replacing the necessary parts, clear the fault codes from the ECM using the OBD-II scanner to reset the system.
  4. Perform a Leak Test: Test the EVAP system for leaks using a smoke machine to ensure that the system is sealed properly and no further issues are present.
  5. Verify Repair: Take the vehicle for a test drive to verify that the check engine light does not reappear and that the vehicle operates normally.

Cost to Fix P2402 2007 Toyota Highlander

The typical repair costs for addressing the P2402 code in a 2007 Toyota Highlander can range from $200 to $500, depending on the exact cause of the issue and the cost of parts and labor. The specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It is advisable to check with local shops for a more accurate estimate of the repair costs. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often offer more competitive pricing.

When is the Code Detected?

To determine leak criterion (Reference pressure), vacuum pump creates negative pressure in canister pump module through 0.02 inch orifice and pressure is measured. If the conditions are not met, Engine Control Module (ECM) the code will be set.

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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 2007 Toyota Highlander Code

1. What are the common symptoms of OBDII code P2402 in a 2007 Toyota Highlander?

The common symptoms include the check engine light coming on, potential fuel odor, and issues with vehicle emissions testing.

2. What can cause the OBDII code P2402 in a 2007 Toyota Highlander?

The code P2402 is typically triggered by a malfunction in the EVAP system leak detection pump control circuit, which may be caused by damaged wiring, a faulty pump, or a malfunctioning control module.

3. How serious is the OBDII code P2402 in a 2007 Toyota Highlander?

While the code itself may not cause immediate drivability issues, it can affect the vehicle's emissions and overall performance. It is important to address the underlying problem to ensure proper functionality and compliance with emissions regulations.

4. How can I diagnose the OBDII code P2402 in my 2007 Toyota Highlander?

Diagnosing the code may involve checking the EVAP system components, inspecting wiring for damage, testing the leak detection pump, and using a scan tool to analyze the control circuit.

5. What are some repair tips for fixing OBDII code P2402 in a 2007 Toyota Highlander?

Repair tips may include repairing or replacing damaged wiring, testing and possibly replacing the leak detection pump, and resetting the fault codes after the repairs are completed.

6. Can I continue driving my 2007 Toyota Highlander with OBDII code P2402?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to prevent potential emissions problems and ensure proper vehicle performance.

7. How much does it cost to repair OBDII code P2402 in a 2007 Toyota Highlander?

The cost of repair can vary depending on the underlying cause of the code, such as replacing wiring, the leak detection pump, or the control module. It is advisable to consult with a professional mechanic for an accurate estimate.

8. Will resetting the check engine light resolve OBDII code P2402 in a 2007 Toyota Highlander?

Simply resetting the check engine light may temporarily turn it off, but the underlying issue causing the code will still need to be addressed to prevent the light from coming back on.

9. Is it possible to prevent OBDII code P2402 from occurring in a 2007 Toyota Highlander?

Regular maintenance, such as checking the EVAP system components, inspecting wiring periodically, and promptly addressing any fuel-related issues, can help prevent the occurrence of this code.

10. Can I fix OBDII code P2402 in my 2007 Toyota Highlander myself?

Depending on your mechanical skills and access to tools, you may be able to address some aspects of the repair yourself, such as checking and repairing wiring. However, more complex issues may require professional assistance.

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