AutoCodes – Generic – P240B

P240B Code - Evaporative Emission System Leak Detection Pump Heater Control Circuit Low

Quick Answer

The Engine Control Module (ECM) checks power consumption on the Leak Detection Pump. Common causes include Faulty Leak Detection Pump, Leak Detection Pump harness is open or shorted, Leak Detection Pump 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: P240B indicates Evaporative Emission System Leak Detection Pump Heater Control Circuit Low.
Common causes: Common causes include Faulty Leak Detection Pump, Leak Detection Pump harness is open or shorted, Leak Detection Pump 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 17,302

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 P240B Description

The Engine Control Module (ECM) checks power consumption on the Leak Detection Pump. The Diagnostic Trouble Code (DTC) can be diagnosed when the leak diagnostic system is run. A diagnostic trouble code is stored if the current consumption of the pump in the Leak Detection Pump unit varies too much during the reference phase.

OBDII Code P240B - Evaporative Emission System Leak Detection Pump Heater Control Circuit Low - AutoCodes.com — P240B Code - Evaporative Emission System Leak Detection Pump Heater Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC P240B?

Faulty Leak Detection Pump
Leak Detection Pump harness is open or shorted
Leak Detection Pump circuit poor electrical connection

How to Fix the DTC P240B?

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 P240B 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 P240B code?

Need more information on how to fix the P240B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P240B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P240B BMW — Evaporative Emission System Leak Detection Pump Heater Control Circuit Low

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 P240B Code

1. What are common symptoms of OBDII code P240B?

- Common symptoms include the illumination of the check engine light, decreased fuel efficiency, and potentially a gasoline smell near the vehicle.

2. What can cause OBDII code P240B to trigger?

- This code is typically triggered by a malfunction in the evaporative emission system leak detection pump heater control circuit, which results in a low voltage condition.

3. How serious is OBDII code P240B?

- While this code may not cause immediate drivability issues, it can negatively impact emissions and fuel efficiency. It is recommended to address the issue promptly to avoid potential long-term damage.

4. Can I continue driving my vehicle with OBDII code P240B?

- It is generally safe to drive the vehicle with this code, but it is important to address the underlying issue to prevent further damage and ensure optimal performance.

5. How can I diagnose the cause of OBDII code P240B?

- Diagnosing this code usually involves inspecting the evaporative emission system components, checking the wiring and connections related to the leak detection pump heater, and using a diagnostic tool to analyze the circuit.

6. What are some repair tips for fixing OBDII code P240B?

- Repair tips may include checking and repairing any damaged wiring, replacing a faulty leak detection pump heater, clearing the code, and performing a thorough system test to ensure the issue is resolved.

7. Is it possible to reset OBDII code P240B without fixing the underlying issue?

- While clearing the code may temporarily turn off the check engine light, it is not recommended to reset the code without addressing the root cause, as it will likely reappear once the issue persists.

8. Can a DIY enthusiast fix OBDII code P240B at home?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this code at home by following repair guides and utilizing diagnostic equipment.

9. How much does it typically cost to repair OBDII code P240B at a mechanic or dealership?

- The cost of repairing this code can vary based on the underlying issue, but it may range from $100 to $500 or more, including parts and labor, when done at a mechanic or dealership.

10. Are there any recalls related to OBDII code P240B for specific vehicle models?

- It is advisable to check with the vehicle manufacturer or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls related to this specific OBDII code for your vehicle model.