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💡 What Does Code P0517 Mean?
Trouble Code P0517 refers to a fault detected in the 12-volt battery temperature sensor. This sensor monitors the temperature of your 12V battery to ensure it charges safely and operates correctly. If the signal from this sensor reads too high or becomes erratic, the system flags this code to prevent damage or overcharging.
This is not a hybrid battery code and does not indicate a failure of your hybrid battery system. It strictly pertains to the 12-volt battery system.
⚠️ When Does This Code Typically Happen?
🧰 Immediately After Our Installation
If The Hybrid Geek recently replaced your 12-volt battery, and this code appeared shortly after, it’s possible the sensor may have been bumped, misaligned, or not fully reconnected during installation.
⏱️ One Week or More After Installation
If this code shows up a week or more after service, it is unlikely related to our work, and may be caused by:
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A failing or worn-out sensor
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Exposure to extreme heat or cold
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Corrosion or damage to wiring
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Normal wear and tear on an aging component
✅ What Should I Do Next?
If you’re seeing this code, here’s what we recommend:
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Check Your Service Timing
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If we replaced your 12V battery less than 7 days ago, please contact us. We’ll review your installation and make it right if it’s related.
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If it’s been more than a week, it’s likely not installation-related.
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Inspect the 12V Battery & Wiring
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Look for corrosion, loose connections, or obvious wear near the battery terminals or sensor wire.
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Schedule a Diagnostic
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If you’re unsure, we recommend visiting a trusted mechanic or dealership to properly inspect and, if needed, replace the 12V battery temperature sensor.
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📣 What We’ll Tell You If You Contact Us
"The P0517 code refers to the temperature sensor on your 12V battery. If we recently replaced the battery, there’s a chance the sensor may not have been reattached perfectly. If this code came up a week or more after service, it’s likely not related to our work — but we’re happy to help you figure it out. Please contact our team so we can verify your installation details."
🔍 Final Notes
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This code does not impact your hybrid battery and does not indicate failure of your hybrid system.
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The 12V temperature sensor is a standard vehicle component—not part of your hybrid battery replacement.
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If you're unsure, let us help review your service record and point you in the right direction.
