AutoCodes – Ford – P0687 Ford

P0687 Ford Code - Engine Control Module Power Relay Control Circuit High

Quick Answer

The Engine Control Module (ECM) monitors the power inputs. Common causes include Faulty Engine Control Module (ECM) power relay, ECM power relay harness is open or shorted, ECM power relay 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: P0687 Ford indicates Engine Control Module Power Relay Control Circuit High.
Common causes: Common causes include Faulty Engine Control Module (ECM) power relay, ECM power relay harness is open or shorted, ECM power relay 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,832

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 May 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0687 Ford Description

The Engine Control Module (ECM) monitors the power inputs. The ECM sets the OBDII code when the ECM detects a high power voltage input.

OBDII Code P0687 Ford - Engine Control Module Power Relay Control Circuit High - AutoCodes.com — P0687 Ford Code - Engine Control Module Power Relay Control Circuit High

What does this mean?

What are the Possible Causes of the DTC P0687 Ford?

Faulty Engine Control Module (ECM) power relay
ECM power relay harness is open or shorted
ECM power relay circuit poor electrical connection
Faulty ECM

How to Fix the DTC P0687 Ford?

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 P0687 Ford 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 P0687 Ford code?

Need more information on how to fix the P0687 Ford code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0687 Ford code diagnosed by a professional: Find a repair shop in your area

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 P0687 Ford Code

1. What are the common symptoms of OBDII code P0687 in a Ford vehicle?

- Common symptoms include engine stalling, rough idling, poor acceleration, and the Check Engine Light turning on.

2. What does the OBDII code P0687 for Ford indicate?

- The code indicates a problem with the Engine Control Module Power Relay Control Circuit being too high.

3. What are the possible causes of OBDII code P0687 in a Ford?

- Possible causes include a faulty power relay, wiring issues, a damaged Engine Control Module (ECM), or a poor connection.

4. How can I diagnose the cause of OBDII code P0687 in my Ford vehicle?

- To diagnose the issue, you can check the power relay, inspect the wiring for any damage, test the ECM, and ensure all connections are secure.

5. Can I continue driving my Ford with OBDII code P0687?

- It's not recommended to drive with this code as it can lead to further damage and potentially unsafe driving conditions. It's best to address the issue promptly.

6. How can I repair OBDII code P0687 in my Ford?

- Repair options may include replacing the power relay, repairing any damaged wiring, replacing the ECM if necessary, and ensuring all connections are properly secured.

7. Is it possible to reset the OBDII code P0687 in a Ford using a diagnostic scanner?

- Yes, you can use a diagnostic scanner to reset the code after addressing the underlying issue. However, if the problem persists, the code may reappear.

8. Are there any preventative measures to avoid OBDII code P0687 in a Ford?

- Regular maintenance checks, inspecting the wiring for signs of wear, and ensuring proper electrical connections can help prevent this code from occurring.

9. Can a DIY enthusiast fix OBDII code P0687 in a Ford, or is professional help required?

- Depending on your skill level and experience with automotive repairs, you may be able to address the issue yourself by following repair guides and using the necessary tools.

10. How long does it typically take to repair OBDII code P0687 in a Ford?

- The repair time can vary based on the exact cause of the issue and your experience level. It could take anywhere from a few hours to a full day to complete the repair.