AutoCodes – Toyota – P2402 2007 Toyota Prius

P2402 2007 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 2007 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 4,725
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 2007 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 2007 Toyota Prius - EVAP System Leak Detection Pump Control Circuit High - AutoCodes.com
P2402 2007 Toyota Prius Code - EVAP System Leak Detection Pump Control Circuit High

What are the Possible Causes of the DTC P2402 2007 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 2007 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 2007 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 2007 Toyota Prius code?

Need more information on how to fix the P2402 2007 Toyota Prius code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2402 2007 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 2007 Toyota Prius Code

1. What are the common symptoms of OBDII code P2402 on a 2007 Toyota Prius?

- Common symptoms include the check engine light illuminating, reduced fuel efficiency, and potential issues with the vehicle's emissions system.

2. What are the possible causes of OBDII code P2402 on a 2007 Toyota Prius?

- The code P2402 typically indicates a malfunction in the EVAP system leak detection pump control circuit, which can be caused by a faulty leak detection pump, damaged wiring, or a poor electrical connection.

3. How serious is OBDII code P2402 on a 2007 Toyota Prius?

- While the code itself may not cause immediate drivability issues, it is important to address it promptly to ensure proper functioning of the EVAP system and maintain emissions compliance.

4. Can I continue driving my 2007 Toyota Prius with OBDII code P2402?

- It is generally safe to drive the vehicle with the code P2402, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential damage to the emissions system.

5. How can I diagnose OBDII code P2402 on my 2007 Toyota Prius?

- Diagnosing this code typically involves using an OBDII scanner to retrieve the specific code, inspecting the EVAP system components, and testing the leak detection pump control circuit for faults.

6. What are some repair tips for addressing OBDII code P2402 on a 2007 Toyota Prius?

- Repair tips may include checking and repairing any damaged wiring, replacing the leak detection pump if faulty, and ensuring all electrical connections are secure and functioning properly.

7. Will resetting the check engine light resolve OBDII code P2402 on a 2007 Toyota Prius?

- Simply resetting the check engine light will not fix the underlying issue causing code P2402. It is important to diagnose the problem and perform the necessary repairs to clear the code.

8. How much does it typically cost to repair OBDII code P2402 on a 2007 Toyota Prius?

- Repair costs for OBDII code P2402 can vary depending on the extent of the issue and the specific repairs needed. It is recommended to consult a professional mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P2402 on a 2007 Toyota Prius?

- While some DIY enthusiasts may have the skills to diagnose and repair code P2402, it is recommended to seek professional help, especially when dealing with complex electrical components in the EVAP system.

10. How often does OBDII code P2402 occur in 2007 Toyota Prius vehicles?

- OBDII code P2402 related to the EVAP system leak detection pump control circuit high may occur occasionally in 2007 Toyota Prius vehicles, especially as they age and components wear out. Regular maintenance can help prevent this code from appearing.

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