Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means that the car's battery is giving out too much power, kind of like when you have too many batteries in a toy and it goes too fast or might break.
The vehicle's electrical system has detected that the battery voltage is higher than the expected range.
The B1317 code indicates that the battery voltage is exceeding the normal operating range. This could be due to a malfunction in the voltage regulator, alternator, or battery itself, leading to excessive voltage being supplied to the vehicle's electrical system.
• Dashboard warning lights
• Electrical components malfunctioning
• Battery overheating
• Faulty voltage regulator
• Overcharging alternator
• Defective battery
Voltage Regulator: A device that maintains a constant voltage level.
Alternator: A generator that produces electricity to charge the battery and power the electrical system.
• Check the battery voltage with a multimeter.
• Inspect the alternator and voltage regulator for faults.
• Examine the battery for signs of damage or wear.
• Replace the voltage regulator if faulty.
• Repair or replace the alternator if necessary.
• Replace the battery if it is defective.
• Multimeter
• Wrench set
• Battery tester
$100 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check battery voltage.
• Inspect alternator and voltage regulator periodically.
• Ensure battery terminals are clean and secure.
Electrical System Issue
• Avoid using high-power electrical devices until the issue is resolved.
• Get the vehicle checked by a professional as soon as possible.
Check with the vehicle manufacturer for specific warranty coverage on electrical components.
This code has been commonly associated with issues in vehicles with older or worn-out electrical systems.
Moderate – It should be addressed soon to prevent damage to electrical components.
Driving with high battery voltage can lead to electrical failures, which may affect vehicle safety systems.
• Vehicle ignition on
• Engine running
The battery is typically located in the engine bay, while the alternator and voltage regulator are mounted on the engine.
Q: Can I drive with a B1317 code?
A: It's not recommended to drive for long periods as it can cause damage to electrical components.
Q: Will this code cause my car to stop?
A: It might not stop immediately, but electrical failures could occur, leading to potential breakdowns.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Body and airbag faults often need a scanner that can access more than generic powertrain codes.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking power, ground, and continuity in body-system circuits.
View on Amazon
Universal · Fuse kit
Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.
Useful when body electrical faults trace back to blown fuses or shared circuits.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.