AutoCodes – Ford – P1397 2012 Ford Fusion

P1397 2012 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 2012 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.

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Code Popularity 2,597

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
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Code P1397 2012 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 2012 Ford Fusion - System Voltage Out Of Self Test Range - AutoCodes.com — P1397 2012 Ford Fusion Code - System Voltage Out Of Self Test Range

What does this mean?

What are the Possible Causes of the DTC P1397 2012 Ford Fusion?

Alternator belt loose or missing
Low battery voltage
Faulty Charging System

How to Fix the DTC P1397 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1397 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.

Need more information about the P1397 2012 Ford Fusion code?

Need more information on how to fix the P1397 2012 Ford Fusion code? Get Access to Factory Service Manuals

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 P1397 2012 Ford Fusion Code

1. What are the common symptoms of OBDII code P1397 in a 2012 Ford Fusion?

- Common symptoms include rough idling, stalling, poor engine performance, and potentially difficulty starting the vehicle.

2. What does the OBDII code P1397 "System Voltage Out Of Self Test Range" mean for a 2012 Ford Fusion?

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

3. What are some possible causes of OBDII code P1397 in a 2012 Ford Fusion?

- Potential causes include a failing battery, alternator issues, faulty wiring or connections, or problems with the PCM itself.

4. How can I diagnose the cause of OBDII code P1397 in my 2012 Ford Fusion?

- It is recommended to start by checking the battery voltage, inspecting the alternator and its connections, and performing a thorough examination of the wiring for any signs of damage or corrosion.

5. Can I continue driving my 2012 Ford Fusion with OBDII code P1397?

- It is not advisable to continue driving the vehicle with this code, as it can lead to further damage to the electrical system and may result in a breakdown.

6. How can I reset OBDII code P1397 in my 2012 Ford Fusion?

- After addressing the underlying issue causing the code, you can reset it using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

7. Is it necessary to visit a mechanic for OBDII code P1397 in a 2012 Ford Fusion?

- While you can attempt to diagnose and repair the issue yourself, seeking the expertise of a qualified mechanic is recommended for a comprehensive and accurate repair.

8. What are some repair tips for addressing OBDII code P1397 in a 2012 Ford Fusion?

- Ensure the battery is in good condition, check the alternator output, inspect all electrical connections, and consider having the PCM tested if necessary.

9. Will OBDII code P1397 cause damage to other components of a 2012 Ford Fusion?

- Ignoring this code can potentially lead to damage to other electrical components in the vehicle, so it's important to address the issue promptly.

10. How much can I expect to pay for repairing OBDII code P1397 in my 2012 Ford Fusion?

- The cost of repair can vary depending on the underlying cause of the issue, but it is advisable to budget for diagnostic fees, parts replacement, and labor costs.