AutoCodes – Ford – P1397 2007 Ford Fusion

P1397 2007 Ford Fusion Code - System Voltage Out Of Self Test Range

Quick Answer

The P1397 code indicates that the 12-volt system voltage is too high or too low during the Key On Engine Off (KOEO) or key on engine running (KOER) self-test. Common causes include Alternator belt loose or missing, Low battery voltage, Faulty Charging System. 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: P1397 2007 Ford Fusion indicates System Voltage Out Of Self Test Range.
Common causes: Common causes include Alternator belt loose or missing, Low battery voltage, Faulty Charging System.
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 2,266

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 Aug 18, 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 P1397 2007 Ford Fusion Description

The P1397 code indicates that the 12-volt system voltage is too high or too low during the Key On Engine Off (KOEO) or key on engine running (KOER) self-test. It sets if the system voltage falls below or exceeds the calibrated threshold at any time during the KOEO or KOER self-test.

OBDII Code P1397 2007 Ford Fusion - System Voltage Out Of Self Test Range - AutoCodes.com — P1397 2007 Ford Fusion Code - System Voltage Out Of Self Test Range

What does this mean?

What are the Possible Causes of the DTC P1397 2007 Ford Fusion?

Alternator belt loose or missing
Low battery voltage
Faulty Charging System

How to Fix the DTC P1397 2007 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 P1397 2007 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 P1397 2007 Ford Fusion code?

Need more information on how to fix the P1397 2007 Ford Fusion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1397 2007 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 P1397 2007 Ford Fusion Code

1. What are the common symptoms of OBDII code P1397 on a 2007 Ford Fusion?

- Common symptoms include intermittent stalling, rough idling, and decreased engine performance.

2. What does the OBDII code P1397 "System Voltage Out Of Self Test Range" indicate on a 2007 Ford Fusion?

- This code indicates that the vehicle's powertrain control module (PCM) has detected that the system voltage is outside of the self-test range.

3. What are the possible causes of OBDII code P1397 on a 2007 Ford Fusion?

- Possible causes include a faulty alternator, battery issues, wiring problems, or a malfunctioning PCM.

4. How can I diagnose the cause of OBDII code P1397 on my 2007 Ford Fusion?

- To diagnose the issue, check the alternator output voltage, inspect the battery condition, and perform a thorough inspection of the wiring harness and connections.

5. Can I still drive my 2007 Ford Fusion with OBDII code P1397 active?

- It is not recommended to drive the vehicle with this code active as it can lead to further electrical system issues and potential breakdowns.

6. How should I repair OBDII code P1397 on my 2007 Ford Fusion?

- Repair involves addressing the root cause, such as replacing a faulty alternator, repairing wiring issues, or replacing a malfunctioning PCM.

7. Is it safe to reset the OBDII code P1397 on my 2007 Ford Fusion using a diagnostic tool?

- While you can clear the code using a diagnostic tool, it is essential to diagnose and fix the underlying issue first to prevent the code from reoccurring.

8. Are there any DIY tips for troubleshooting OBDII code P1397 on a 2007 Ford Fusion?

- DIY tips include checking the battery connections, inspecting the alternator belt for wear, and ensuring all wiring connections are secure and free from damage.

9. Can a low battery voltage trigger OBDII code P1397 on a 2007 Ford Fusion?

- Yes, low battery voltage can trigger this code as it affects the overall system voltage and can lead to issues with the PCM's self-test range.

10. How can I prevent OBDII code P1397 from occurring on my 2007 Ford Fusion in the future?

- Regular maintenance, such as checking the battery health, alternator output, and electrical system connections, can help prevent this code from occurring in the future.