P1397 Ford 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 Ford 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.
Code P1397 Ford Description
What are the Possible Causes of the DTC P1397 Ford?
- Alternator belt loose or missing
- Low battery voltage
- Faulty Charging System
How to Fix the DTC P1397 Ford?
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 Ford 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 Ford code?
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Need Help with the Code?
Get the P1397 Ford code diagnosed by a professional: Find a repair shop in your area
Information for Specific Ford Models
- P1397 2006 Ford Fusion — System Voltage Out Of Self Test Range
- P1397 2007 Ford Fusion — System Voltage Out Of Self Test Range
- P1397 2008 Ford Fusion — System Voltage Out Of Self Test Range
- P1397 2010 Ford Fusion — System Voltage Out Of Self Test Range
- P1397 2011 Ford Fusion — System Voltage Out Of Self Test Range
- P1397 2012 Ford Fusion — System Voltage Out Of Self Test Range
- P1397 2009 Ford Mustang — System Voltage Out Of Self Test Range
Frequently Asked Questions about P1397 Ford Code
1. What are common symptoms of OBDII code P1397 in Ford vehicles?
- Common symptoms include rough engine idle, stalling, poor acceleration, and potential issues with the vehicle's electrical system.
2. What does the OBDII code P1397 "System Voltage Out Of Self Test Range" indicate in Ford vehicles?
- This code indicates that the vehicle's system voltage is not within the expected range during the self-test procedure.
3. What are possible causes of OBDII code P1397 in Ford vehicles?
- Possible causes include a faulty alternator, battery issues, corroded wiring or connections, a malfunctioning voltage regulator, or a problem with the powertrain control module (PCM).
4. How can I diagnose the OBDII code P1397 in my Ford vehicle?
- Diagnosis typically involves checking the vehicle's battery voltage, inspecting the alternator, testing the voltage regulator, and examining the wiring and connections for any signs of damage or corrosion.
5. Can I continue driving my Ford vehicle with the OBDII code P1397 present?
- It is not recommended to continue driving the vehicle with this code present, as it can lead to further electrical issues and potential damage to the vehicle's components.
6. What are some repair tips for addressing OBDII code P1397 in a Ford vehicle?
- Repair tips may include checking and replacing the alternator if necessary, testing and replacing the battery, inspecting and repairing any damaged wiring or connections, and resetting the code with a diagnostic tool after repairs are made.
7. How much does it typically cost to repair OBDII code P1397 in a Ford vehicle?
- The cost of repair can vary depending on the specific issue causing the code, but it may range from a few hundred to over a thousand dollars, especially if components like the alternator or PCM need to be replaced.
8. Is it possible to reset the OBDII code P1397 in a Ford vehicle without making any repairs?
- While you can reset the code using a diagnostic tool, it is essential to address the underlying issue causing the code to prevent further problems and potential breakdowns.
9. Are there any preventive measures to avoid OBDII code P1397 in Ford vehicles?
- Regular maintenance of the vehicle's charging system, including checking the battery, alternator, and electrical connections, can help prevent issues that may trigger this code.
10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P1397 in a Ford vehicle?
- Depending on the exact cause of the code, some DIY enthusiasts may be able to address the issue by checking and replacing components like the battery or fuses. However, more complex repairs may require professional assistance.
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