AutoCodes – Ford – P0685 2006 Ford Fusion

P0685 2006 Ford Fusion Code - Powertrain Control Module Power Relay Control Circuit Open

Quick Answer

This DTC sets when the ignition switch position run circuit indicates the ignition is in the OFF, ACC, or LOCK position, and the amount of time the Powertrain Control Module (PCM) remains powered through the PCM power relay exceeds a predetermined amount of time. Common causes include Faulty Powertrain Control Module (PCM) Power Relay, PCM Power Relay harness is open or shorted, PCM 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: P0685 2006 Ford Fusion indicates Powertrain Control Module Power Relay Control Circuit Open.
Common causes: Common causes include Faulty Powertrain Control Module (PCM) Power Relay, PCM Power Relay harness is open or shorted, PCM 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.

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Code Popularity 3,008

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0685 2006 Ford Fusion Description

OBDII Code P0685 2006 Ford Fusion - Powertrain Control Module Power Relay Control Circuit Open - AutoCodes.com — P0685 2006 Ford Fusion Code - Powertrain Control Module Power Relay Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC P0685 2006 Ford Fusion?

Faulty Powertrain Control Module (PCM) Power Relay
PCM Power Relay harness is open or shorted
PCM Power Relay circuit poor electrical connection
Blown PCM fuse
Faulty PCM

How to Fix the DTC P0685 2006 Ford Fusion?

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 does this mean?

Code Tech Notes

Check all the Engine Control Module (ECM) fuses, if the fuses are OK, then replacing the ECM relay should take care of the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0685 2006 Ford Fusion 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 P0685 2006 Ford Fusion code?

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Need Help with the Code?

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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 P0685 2006 Ford Fusion Code

1. What are the common symptoms of OBDII code P0685 in a 2006 Ford Fusion?

The common symptoms of P0685 include engine stalling, difficulty starting the vehicle, and the illumination of the Check Engine Light.

2. What does the OBDII code P0685 on a 2006 Ford Fusion mean?

P0685 indicates a problem with the Powertrain Control Module (PCM) Power Relay Control Circuit being open, which can disrupt the power supply to the PCM.

3. What are the possible causes of the P0685 code in a 2006 Ford Fusion?

Possible causes of P0685 include a faulty PCM power relay, damaged wiring or connectors in the relay circuit, or a defective PCM.

4. How can I diagnose the P0685 code in my 2006 Ford Fusion?

Diagnosing the P0685 code involves checking the PCM power relay, inspecting the relay circuit for any damage, and testing the PCM itself for any faults using a multimeter.

5. Can I still drive my 2006 Ford Fusion with the P0685 code present?

It is not recommended to drive your vehicle with the P0685 code present, as it can lead to potential engine performance issues and further damage if left unresolved.

6. How can I repair the P0685 code on my 2006 Ford Fusion?

To repair the P0685 code, you may need to replace the faulty PCM power relay, repair any damaged wiring or connectors in the circuit, or replace the PCM if necessary.

7. Will resetting the trouble codes make the P0685 code disappear?

Resetting the trouble codes may temporarily clear the Check Engine Light, but if the underlying issue causing the P0685 code is not addressed, the code is likely to reappear.

8. Is it possible to prevent the P0685 code from appearing in my 2006 Ford Fusion?

Regular maintenance and inspection of the PCM power relay and associated wiring can help prevent the occurrence of the P0685 code in your vehicle.

9. Can a DIY enthusiast fix the P0685 code in a 2006 Ford Fusion?

While some DIY enthusiasts may be able to diagnose and repair the P0685 code themselves, it is recommended to seek professional help for a thorough diagnosis and proper repair.

10. How much can I expect to pay to fix the P0685 code in a 2006 Ford Fusion?

The cost to fix the P0685 code can vary depending on the exact cause of the issue and whether you choose to do the repairs yourself or take your vehicle to a mechanic. Costs can range from a few hundred to over a thousand dollars.