AutoCodes – Ford – P0620 2009 Ford Fusion

P0620 2009 Ford Fusion Code - Generator Control 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: P0620 2009 Ford Fusion indicates Generator Control 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 2,109

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
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0620 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 P0620 2009 Ford Fusion - Generator Control Circuit - AutoCodes.com — P0620 2009 Ford Fusion Code - Generator Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0620 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 P0620 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0620 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 P0620 2009 Ford Fusion 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 P0620 2009 Ford Fusion Code

1. What does the OBDII code P0620 mean on a 2009 Ford Fusion?

The P0620 code indicates a malfunction in the generator control circuit of the vehicle.

2. What are the common symptoms of a P0620 code in a 2009 Ford Fusion?

Common symptoms include dimming or flickering lights, battery draining quickly, and issues with the vehicle's electrical systems.

3. What are the possible causes of a P0620 code in a 2009 Ford Fusion?

Possible causes include a faulty generator (alternator), damaged wiring or connectors in the generator control circuit, or a failing battery.

4. How can I diagnose a P0620 code on my 2009 Ford Fusion?

Diagnosis typically involves checking the generator control circuit for any open circuits, shorts, or damaged components using a multimeter and visual inspection.

5. Can I still drive my 2009 Ford Fusion with a P0620 code?

It is not recommended to drive the vehicle with a P0620 code, as it can lead to a dead battery or other electrical issues while driving.

6. How do I repair a P0620 code on my 2009 Ford Fusion?

Repairing the P0620 code may involve replacing the generator (alternator), repairing or replacing damaged wiring or connectors, or addressing any battery issues.

7. Can a DIY enthusiast fix a P0620 code on a 2009 Ford Fusion?

While some may attempt DIY repairs, it is recommended to have a professional technician diagnose and repair the issue to ensure proper resolution.

8. How much does it cost to repair a P0620 code on a 2009 Ford Fusion?

Costs can vary depending on the specific cause of the issue, but repairs for a P0620 code may range from $200 to $800 or more, including parts and labor.

9. Will resetting the OBDII system clear a P0620 code on a 2009 Ford Fusion?

Resetting the system may temporarily clear the code, but it is important to address the root cause of the issue to prevent it from reoccurring.

10. How can I prevent a P0620 code from appearing on my 2009 Ford Fusion in the future?

Regular maintenance of the vehicle's electrical system, including checking the generator, wiring, and battery, can help prevent the occurrence of a P0620 code.