AutoCodes – Generic – P143F

P143F Code - Evaporative Emission System Afterrunning Diagnosis

Quick Answer

The Engine Control Module (ECM) monitors the Evaporative Emission System. Common causes include Faulty Evaporative Emission System, Evaporative Emission System harness is open or shorted, Evaporative Emission System 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
P143F indicates Evaporative Emission System Afterrunning Diagnosis.
Common causes
Common causes include Faulty Evaporative Emission System, Evaporative Emission System harness is open or shorted, Evaporative Emission System 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 2,838
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 27, 2019
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Code P143F Description

The Engine Control Module (ECM) monitors the Evaporative Emission System. The ECM sets the OBDII code when the Evaporative Emission System is not to factory specifications.
OBDII Code P143F - Evaporative Emission System Afterrunning Diagnosis - AutoCodes.com
P143F Code - Evaporative Emission System Afterrunning Diagnosis

What are the Possible Causes of the DTC P143F?

  • Faulty Evaporative Emission System
  • Evaporative Emission System harness is open or shorted
  • Evaporative Emission System circuit poor electrical connection

How to Fix the DTC P143F?

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 P143F 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 P143F code?

Need more information on how to fix the P143F code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P143F code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

  • P143F BMW β€” Evaporative Emission System Afterrunning Diagnosis
  • P143F MINI β€” Evaporative Emission System Afterrunning Diagnosis
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 P143F Code

1. What are the common symptoms of OBDII code P143F related to the Evaporative Emission System Afterrunning Diagnosis?

- Common symptoms include the check engine light illuminating, decreased fuel efficiency, and potential issues with emissions control.

2. What are the possible causes of OBDII code P143F?

- Causes may include a faulty evaporative emissions pump, damaged hoses, loose gas cap, or issues with the evaporative emissions system's components.

3. How can I diagnose OBDII code P143F?

- Diagnosis typically involves using an OBDII scanner to read the code, inspecting the evaporative emissions system components, and checking for leaks in the system.

4. Can driving with OBDII code P143F cause further damage to my vehicle?

- While driving with this code may not immediately harm your vehicle, it can lead to increased emissions and decreased fuel efficiency over time.

5. What are the repair options for OBDII code P143F?

- Repair options may include replacing the evaporative emissions pump, repairing or replacing damaged hoses, ensuring the gas cap is properly sealed, and addressing any other faulty components.

6. Are there any DIY tips for fixing OBDII code P143F?

- DIY tips may include checking and tightening the gas cap, visually inspecting hoses for damage, and clearing the code with an OBDII scanner to see if it reoccurs.

7. How urgent is it to address OBDII code P143F?

- While it may not require immediate attention, addressing the issue promptly can prevent further emissions-related problems and improve overall vehicle performance.

8. Can OBDII code P143F be triggered by other underlying issues?

- Yes, this code can be triggered by various issues such as vacuum leaks, electrical faults, or problems with the fuel system, so a comprehensive diagnosis is recommended.

9. Is it safe to continue driving with OBDII code P143F unresolved?

- It is generally safe to drive with this code, but addressing it promptly is recommended to ensure proper emissions control and prevent potential damage to other components.

10. How can I prevent OBDII code P143F from recurring in the future?

- Regular maintenance, such as checking and replacing the gas cap when needed, inspecting the evaporative emissions system during routine service, and avoiding overfilling the fuel tank, can help prevent the code from recurring.

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