AutoCodes – Toyota – P2402 2008 Toyota Prius

P2402 2008 Toyota Prius Code - EVAP System Leak Detection Pump Control Circuit High

Quick Answer

5 hours after the ignition switch is turned OFF, the electric vacuum pump creates negative pressure (vacuum) in the EVAP (Evaporative Emission) system. Common causes include Faulty Vacuum Pump Module, Vacuum Pump Module harness is open or shorted, Vacuum 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 2008 Toyota Prius indicates EVAP System Leak Detection Pump Control Circuit High.
Common causes
Common causes include Faulty Vacuum Pump Module, Vacuum Pump Module harness is open or shorted, Vacuum 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 4,879
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 04, 2020
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Code P2402 2008 Toyota Prius Description

5 hours after the ignition switch is turned OFF, the electric vacuum pump creates negative pressure (vacuum) in the EVAP (Evaporative Emission) system. The Engine Control Module (ECM) monitors for leaks and actuator malfunctions based on the EVAP pressure. To determine the leak criterion (Reference pressure), a vacuum pump creates negative pressure in the canister pump module through 0.02 inch orifice and pressure is measured. If the conditions are not met, the Engine Control Module the code will be set.
OBDII Code P2402 2008 Toyota Prius - EVAP System Leak Detection Pump Control Circuit High - AutoCodes.com
P2402 2008 Toyota Prius Code - EVAP System Leak Detection Pump Control Circuit High

What are the Possible Causes of the DTC P2402 2008 Toyota Prius?

  • Faulty Vacuum Pump Module
  • Vacuum Pump Module harness is open or shorted
  • Vacuum Pump Module circuit poor electrical connection
  • EVAP system hose (clogged, cracked or broken)
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2402 2008 Toyota Prius?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2402 2008 Toyota Prius 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 2008 Toyota Prius code?

Need more information on how to fix the P2402 2008 Toyota Prius code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2402 2008 Toyota Prius code diagnosed by a professional: Find a repair shop in your area

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 2008 Toyota Prius Code

1. What does OBDII code P2402 mean for a 2008 Toyota Prius?

- OBDII code P2402 indicates a problem with the EVAP system leak detection pump control circuit being high in a 2008 Toyota Prius.

2. What are the common symptoms of OBDII code P2402 in a 2008 Toyota Prius?

- Common symptoms of code P2402 in a 2008 Prius may include the check engine light coming on, decreased fuel efficiency, and potentially a fuel odor.

3. What are possible causes of OBDII code P2402 in a 2008 Toyota Prius?

- The most common causes of code P2402 in a 2008 Prius are a faulty leak detection pump, damaged wiring or connectors in the EVAP system, or a malfunctioning EVAP system pressure sensor.

4. How can I diagnose the issue related to OBDII code P2402 in my 2008 Toyota Prius?

- To diagnose code P2402, it is recommended to perform a visual inspection of the EVAP system components, check for damaged wiring or connectors, and use a scan tool to monitor the EVAP system's operation.

5. Can I continue driving my 2008 Toyota Prius with OBDII code P2402?

- It is generally not recommended to continue driving a vehicle with an active OBDII code, as it can lead to further damage and potential safety issues. It is best to address the underlying problem as soon as possible.

6. How do I repair OBDII code P2402 in a 2008 Toyota Prius?

- Repairing code P2402 in a 2008 Prius may involve replacing the leak detection pump, repairing or replacing damaged wiring or connectors, or addressing any issues with the EVAP system pressure sensor.

7. Can I reset the check engine light after fixing OBDII code P2402 in my 2008 Toyota Prius?

- Once the underlying issue causing code P2402 has been fixed in a 2008 Prius, the check engine light can be reset using an OBDII scan tool to clear the code and turn off the light.

8. Are there any DIY tips for troubleshooting OBDII code P2402 in my 2008 Toyota Prius?

- DIY tips for troubleshooting code P2402 may include checking for loose or damaged EVAP system connections, inspecting the leak detection pump for signs of damage, and ensuring proper EVAP system operation.

9. How much does it typically cost to repair OBDII code P2402 in a 2008 Toyota Prius?

- The cost of repairing code P2402 in a 2008 Prius can vary depending on the specific issue, but it may range from around $200 to $500 for parts and labor at a repair shop.

10. Is it necessary to have OBDII code P2402 diagnosed and repaired by a professional for my 2008 Toyota Prius?

- While some DIY troubleshooting is possible, diagnosing and repairing code P2402 in a 2008 Prius may require specialized tools and expertise, so consulting a professional mechanic is recommended for an accurate and thorough fix.

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