AutoCodes – Generic – P2400

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

Quick Answer

The DM-TL (Diagnostic Module Tank Leakage) is used to monitor the evaporative system for leaks. Common causes include Faulty Diagnostic Module Tank Leakage (DM-TL), Diagnostic Module Tank Leakage harness is open or shorted, Diagnostic Module Tank Leakage 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 indicates Evaporative Emission System Leak Detection Pump Control Circuit/Open.
Common causes: Common causes include Faulty Diagnostic Module Tank Leakage (DM-TL), Diagnostic Module Tank Leakage harness is open or shorted, Diagnostic Module Tank Leakage 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 29,129

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 Oct 15, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2400 Description

The DM-TL (Diagnostic Module Tank Leakage) is used to monitor the evaporative system for leaks. The diagnostic module consists of an air filter, an electrically driven air pump, a change-over valve, and a 0.02-inch orifice for reference measurement. Heated type Module applied to improved Leakage Detection Module. Using the heated DM-TL can completely eliminate the humidity influence. So, the Leakage detection never stopped caused of the current fluctuation (due to dew effects at extreme high humidity). The Powertrain Control Module (PCM) sets Diagnostic Trouble Code (DTC) P2400 if the PCM detects that the DM-TL Pump motor control line is open or disconnected.

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

What does this mean?

What are the Possible Causes of the DTC P2400?

Faulty Diagnostic Module Tank Leakage (DM-TL)
Diagnostic Module Tank Leakage harness is open or shorted
Diagnostic Module Tank Leakage circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P2400?

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 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 P2400 code?

Need more information on how to fix the P2400 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2400 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2400 Dodge — Evaporative Emission System Leak Detection Pump Control Circuit/Open
P2400 Hyundai — Evaporative Emission System Leak Detection Pump Control Circuit/Open
P2400 KIA — Evaporative Emission System Leak Detection Pump Control Circuit/Open

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 Code

1. What are common symptoms of OBDII code P2400?

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

2. What does the OBDII code P2400 indicate?

- OBDII code P2400 refers to a problem in the Evaporative Emission System Leak Detection Pump Control Circuit/Open.

3. What are possible causes of OBDII code P2400?

- Possible causes include a faulty leak detection pump, damaged wiring or connectors in the circuit, or a malfunctioning control module.

4. How can I diagnose the cause of OBDII code P2400?

- Diagnosis typically involves using a scan tool to read the code, checking the integrity of the wiring and connectors, and testing the leak detection pump for proper operation.

5. Can I drive my vehicle with OBDII code P2400?

- It is recommended to address the issue promptly to prevent potential further damage to the emissions system. However, if the vehicle is running normally, it may be safe to drive to a repair facility.

6. How do I repair OBDII code P2400?

- Repair may involve replacing the leak detection pump, repairing or replacing damaged wiring or connectors, or reprogramming the control module, depending on the root cause of the issue.

7. Is OBDII code P2400 a serious problem?

- While the issue may not cause immediate drivability concerns, it can affect emissions and fuel efficiency, so it is important to address the problem to ensure the vehicle meets emissions standards.

8. Can a DIY enthusiast fix OBDII code P2400?

- Depending on the cause of the issue and the individual's skill level, some DIY enthusiasts may be able to address OBDII code P2400 by following repair guides and using the necessary tools.

9. How much does it cost to repair OBDII code P2400 at a mechanic?

- Repair costs can vary depending on the specific cause of the issue, the labor rates of the mechanic, and the cost of any parts that need to be replaced. It is advisable to obtain quotes from different mechanics.

10. How can I prevent OBDII code P2400 from occurring?

- Regular maintenance of the vehicle's emissions system, such as checking for leaks, ensuring proper gas cap tightness, and addressing any warning lights promptly, can help prevent OBDII code P2400 from occurring.