AutoCodes – Toyota – P2401 2007 Toyota Prius

P2401 2007 Toyota Prius Code - EVAP System Leak Detection Pump Control Circuit Low

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: P2401 2007 Toyota Prius indicates EVAP System Leak Detection Pump Control Circuit Low.
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.

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Code Popularity 3,627

How popular is this code, among other codes? Low

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2401 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.

OBDII Code P2401 2007 Toyota Prius - EVAP System Leak Detection Pump Control Circuit Low - AutoCodes.com — P2401 2007 Toyota Prius Code - EVAP System Leak Detection Pump Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P2401 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 P2401 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 P2401 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 P2401 2007 Toyota Prius code?

Need more information on how to fix the P2401 2007 Toyota Prius code? Get Access to Factory Service Manuals

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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 P2401 2007 Toyota Prius Code

1. What are the common symptoms of OBDII code P2401 on a 2007 Toyota Prius?

- Common symptoms include the check engine light illuminating, poor fuel efficiency, and potential issues with the vehicle's evaporative emission control system.

2. What does the OBDII code P2401 2007 Toyota Prius mean?

- This code indicates a problem with the EVAP (Evaporative Emission Control) system leak detection pump control circuit being low.

3. What are the possible causes of the P2401 code on a 2007 Toyota Prius?

- Potential causes include a faulty leak detection pump, damaged wiring or connectors in the control circuit, or a malfunctioning EVAP system.

4. How can I diagnose the P2401 code on my 2007 Toyota Prius?

- Diagnosis typically involves checking the integrity of the EVAP system components, inspecting the wiring and connectors related to the leak detection pump, and using a diagnostic scanner to retrieve trouble codes.

5. Can I drive my 2007 Toyota Prius with the P2401 code?

- It is generally not recommended to drive the vehicle with the P2401 code illuminated, as it can lead to increased emissions and potential long-term damage to the EVAP system.

6. How do I repair the P2401 code on my 2007 Toyota Prius?

- Repair may involve replacing the leak detection pump, repairing damaged wiring or connectors, clearing the code, and testing the system to ensure the issue has been resolved.

7. Are there any DIY tips for fixing the P2401 code on a 2007 Toyota Prius?

- While some DIY enthusiasts may attempt to diagnose the issue themselves, it is recommended to consult a professional mechanic or dealership for proper diagnosis and repair of the EVAP system.

8. How much does it typically cost to fix the P2401 code on a 2007 Toyota Prius?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $200 to $500, including parts and labor.

9. What happens if I ignore the P2401 code on my 2007 Toyota Prius?

- Ignoring the P2401 code can lead to increased emissions, poor fuel efficiency, and potential failure of the vehicle's emissions control system, which may result in a failed emissions test.

10. Can the P2401 code on a 2007 Toyota Prius be triggered by a loose gas cap?

- While a loose gas cap can sometimes trigger an EVAP system code, the P2401 code specifically relates to the leak detection pump control circuit low and is unlikely to be solely caused by a loose gas cap.