B1317 Battery Voltage High

How to Fix B1317 Battery Voltage High


If you’re experiencing the B1317 Battery Voltage High error code on your car, it can be frustrating and confusing. However, with a little bit of knowledge and some DIY solutions, you can fix this issue and get your car back on the road. In this article, we’ll provide you with step-by-step instructions and useful tips to help you address this problem.

What is B1317 Battery Voltage High?

B1317 Battery Voltage High is an error code that indicates there is an issue with the battery voltage in your car. This code is usually triggered when the voltage in the battery exceeds the normal range. This can be caused by a variety of factors, including a faulty alternator, a bad battery, or a problem with the charging system.

Step-by-Step Guide to Fixing B1317 Battery Voltage High

Step 1: Check the Battery

The first step in fixing B1317 Battery Voltage High is to check the battery. Start by turning off your car and opening the hood. Locate the battery and check the voltage using a multimeter. The voltage should be between 12.6 and 12.8 volts. If the voltage is higher than this, it could be a sign that the battery is overcharging.

Step 2: Check the Alternator

If the battery voltage is normal, the next step is to check the alternator. Start by disconnecting the negative battery cable and removing the alternator from the car. Use a multimeter to check the voltage output of the alternator. The voltage should be between 13.5 and 14.5 volts. If the voltage is higher than this, it could be a sign that the alternator is overcharging.

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Step 3: Check the Charging System

If both the battery and alternator are functioning properly, the next step is to check the charging system. Start by checking the voltage regulator and the wiring connections. Make sure that all the connections are clean and tight. If there are any loose or corroded connections, this could be causing the overcharging issue.

Step 4: Replace the Faulty Component

Once you’ve identified the faulty component, the next step is to replace it. If the battery is overcharging, you may need to replace the battery. If the alternator is overcharging, you may need to replace the alternator. If the issue is with the charging system, you may need to replace the voltage regulator or repair any damaged wiring.

Useful Tips

– Regularly check the voltage of your battery to ensure it’s functioning properly.
– If you notice any signs of overcharging, such as a burning smell or a hot battery, stop driving your car immediately and seek professional help.
– Always wear protective gear, such as gloves and safety glasses, when working on your car.


B1317 Battery Voltage High can be a frustrating issue to deal with, but with the right knowledge and tools, you can fix it yourself. By following the step-by-step guide and useful tips provided in this article, you can identify the problem and replace the faulty component. Remember to always prioritize safety and seek professional help if needed.


1. Can I still drive my car if I’m experiencing B1317 Battery Voltage High?

It’s not recommended to drive your car if you’re experiencing B1317 Battery Voltage High. This issue can cause damage to your car’s electrical system and potentially lead to a fire. It’s best to seek professional help and have the issue fixed before driving your car again.

2. How often should I check the voltage of my battery?

It’s recommended to check the voltage of your battery at least once a month. This will help you identify any potential issues before they become major problems.

3. Can I fix B1317 Battery Voltage High myself?

Yes, you can fix B1317 Battery Voltage High yourself if you have the right knowledge and tools. However, if you’re not comfortable working on your car’s electrical system, it’s best to seek professional help.