AutoCodes – Ford – P0622 2009 Ford Fusion

P0622 2009 Ford Fusion Code - Generator Field Terminal Circuit

Quick Answer

The Engine Control Module (ECM) uses the generator turn on signal circuit to control the generator. Common causes include Battery charge, Faulty Generator, Generator harness is open or shorted. 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: P0622 2009 Ford Fusion indicates Generator Field Terminal Circuit.
Common causes: Common causes include Battery charge, Faulty Generator, Generator harness is open or shorted.
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 Step-by-Step Diagnostic Guide My Repairs

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

Code Popularity 1,951

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 01, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

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

Code P0622 2009 Ford Fusion Description

The Engine Control Module (ECM) uses the generator turn on signal circuit to control the generator. A high side driver within the ECM allows the ECM to turn the generator ON and OFF. When Generator operation is desired, the ECM sends a 5 volt signal to the voltage regulator via the generator turn on signal circuit. This causes the voltage regulator to begin controlling the generator field circuit. Once the Generator is enabled by the ECM, the voltage regulator controls generator output independently of the ECM. Under certain operating conditions, the ECM can turn Off the generator by turning Off the 5 volt signal on the generator turn on signal circuit.

OBDII Code P0622 2009 Ford Fusion - Generator Field Terminal Circuit - AutoCodes.com — P0622 2009 Ford Fusion Code - Generator Field Terminal Circuit

What does this mean?

What are the Possible Causes of the DTC P0622 2009 Ford Fusion?

Battery charge
Faulty Generator
Generator harness is open or shorted
Generator circuit poor electrical connection
Engine Control Module (ECM) controlled generator
Faulty ECM

How to Fix the DTC P0622 2009 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

If the battery is OK then the alternator is more than likely the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0622 2009 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 P0622 2009 Ford Fusion code?

Need more information on how to fix the P0622 2009 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0622 2009 Ford Fusion 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 P0622 2009 Ford Fusion Code

1. What does the OBDII code P0622 on a 2009 Ford Fusion indicate?

- The P0622 code specifically refers to a fault in the Generator Field Terminal Circuit in the vehicle's charging system.

2. What are the common symptoms of a P0622 code in a 2009 Ford Fusion?

- Common symptoms include issues with the vehicle's charging system, such as the battery not charging properly, dimming lights, or a warning light on the dashboard.

3. What are the possible causes of the P0622 code in a 2009 Ford Fusion?

- The code can be triggered by a faulty alternator, damaged wiring or connectors in the charging system, or a defective generator field control module.

4. How can I diagnose a P0622 code in my 2009 Ford Fusion?

- Diagnosing the code typically involves checking the alternator output, inspecting the wiring and connectors for damage, and testing the generator field control module for proper function.

5. What are some repair tips for addressing a P0622 code in a 2009 Ford Fusion?

- Repair tips may include replacing a faulty alternator, repairing damaged wiring or connectors, or replacing the generator field control module if needed.

6. Can a P0622 code in a 2009 Ford Fusion cause any serious issues if left unaddressed?

- Ignoring a P0622 code can lead to a drained battery, which may result in the vehicle stalling or refusing to start.

7. Is it safe to continue driving my 2009 Ford Fusion with a P0622 code present?

- It is not recommended to drive the vehicle with a P0622 code as it can lead to potential electrical system failures while driving.

8. How much does it typically cost to repair a P0622 code in a 2009 Ford Fusion?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can I reset the P0622 code in my 2009 Ford Fusion without fixing the underlying issue?

- While you can clear the code with an OBDII scanner, it is crucial to address the root cause to prevent further damage to the vehicle's electrical system.

10. Will a P0622 code in a 2009 Ford Fusion affect fuel efficiency?

- Yes, since the charging system plays a role in the vehicle's overall performance, a P0622 code may impact fuel efficiency due to improper battery charging.