AutoCodes – Dodge – P2400 Dodge

P2400 Dodge Code - Evaporative Emission System Leak Detection Pump Control Circuit/Open

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: P2400 Dodge indicates Evaporative Emission System Leak Detection Pump Control Circuit/Open.
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 4,739

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 P2400 Dodge 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 P2400 Dodge - Evaporative Emission System Leak Detection Pump Control Circuit/Open - AutoCodes.com — P2400 Dodge Code - Evaporative Emission System Leak Detection Pump Control Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P2400 Dodge?

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

How to Fix the DTC P2400 Dodge?

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 P2400 Dodge 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.

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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 P2400 Dodge Code

1. What does the OBDII code P2400 mean on a Dodge vehicle?

P2400 indicates an issue with the Evaporative Emission System Leak Detection Pump Control Circuit, typically caused by an open or disconnected circuit.

2. What are the common symptoms of a P2400 code in a Dodge?

Symptoms may include an illuminated check engine light, failed emissions test, poor fuel economy, or a noticeable fuel odor.

3. What causes a P2400 code to appear on a Dodge?

Common causes include a faulty leak detection pump, damaged wiring or connectors, a blown fuse, or a malfunctioning control module.

4. Can I drive my Dodge with a P2400 code?

While the vehicle may still be drivable, it's recommended to address the issue promptly as it can affect emissions performance and fuel efficiency.

5. How do I diagnose a P2400 code in a Dodge?

Diagnosis involves inspecting the leak detection pump, checking the wiring and connectors for damage, and testing the control circuit for proper voltage and continuity.

6. What tools are needed to troubleshoot a P2400 code in a Dodge?

You’ll need an OBDII scanner, a multimeter, and possibly a wiring diagram for your vehicle’s evaporative emission system.

7. How do I fix a P2400 code on my Dodge?

Repairs may include replacing the leak detection pump, repairing or replacing damaged wiring, or addressing any issues with the control module.

8. How much does it cost to repair a P2400 code on a Dodge?

Repair costs vary but may range from $100 to $500, depending on whether you need to replace the leak detection pump or repair wiring.

9. Can a P2400 code cause other problems in my Dodge?

While it primarily affects the EVAP system, leaving it unresolved may lead to additional emissions-related issues or reduced fuel efficiency.

10. How can I prevent a P2400 code from occurring in my Dodge?

Regular maintenance, including checking the EVAP system components and ensuring all wiring and connectors are in good condition, can help prevent this code.