AutoCodes – Ford – P0622 2012 Ford Fusion

P0622 2012 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 2012 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.

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Code Popularity 2,181

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
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Code P0622 2012 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 2012 Ford Fusion - Generator Field Terminal Circuit - AutoCodes.com — P0622 2012 Ford Fusion Code - Generator Field Terminal Circuit

What does this mean?

What are the Possible Causes of the DTC P0622 2012 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 2012 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 2012 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.

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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 P0622 2012 Ford Fusion Code

1. What does the OBDII code P0622 indicate on a 2012 Ford Fusion?

The P0622 code on a 2012 Ford Fusion specifically refers to an issue with the Generator Field Terminal Circuit.

2. What are the common symptoms of a P0622 code on a 2012 Ford Fusion?

Common symptoms of a P0622 code may include issues with charging the battery, dimming lights, or a battery warning light on the dashboard.

3. What are the potential causes of the P0622 code on a 2012 Ford Fusion?

Possible causes of a P0622 code include a faulty generator, damaged wiring in the field terminal circuit, or a defective voltage regulator.

4. How can I diagnose the P0622 code on my 2012 Ford Fusion?

Diagnosing a P0622 code typically involves checking the generator, inspecting the wiring for any damage, and testing the voltage regulator for proper functioning.

5. Can I still drive my 2012 Ford Fusion with a P0622 code?

It is not recommended to drive your Fusion with a P0622 code, as it may lead to battery draining issues and potential stalling of the vehicle.

6. How can I repair the Generator Field Terminal Circuit issue causing the P0622 code on my 2012 Ford Fusion?

Repairing the Generator Field Terminal Circuit issue may involve replacing the generator, repairing damaged wiring, or replacing the voltage regulator as needed.

7. Is it possible to reset the P0622 code on my 2012 Ford Fusion without repairing the issue?

Resetting the code without addressing the underlying problem may temporarily clear the code, but it is likely to reappear once the issue persists.

8. Can a DIY enthusiast fix the Generator Field Terminal Circuit problem triggering the P0622 code on a 2012 Ford Fusion?

While some DIY enthusiasts may be able to tackle the repair, it is recommended to consult a professional mechanic for accurate diagnosis and repair of the issue.

9. Are there any preventive maintenance tips to avoid encountering the P0622 code on a 2012 Ford Fusion?

Regularly checking the charging system, inspecting the wiring for any signs of wear, and timely addressing any battery-related issues can help prevent the occurrence of a P0622 code.

10. How much can I expect to pay for repairing the Generator Field Terminal Circuit issue causing the P0622 code on my 2012 Ford Fusion?

The cost of repairing a P0622 code can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.